Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca886da587bb806…

MALICIOUS

PDF

89.4 KB Created: 2021-03-22 03:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5ea4004f2741736b76114e9e383bc042 SHA-1: 152f9524be44378fc35146c141133a1e38ce018a SHA-256: fca886da587bb8067f2207e4b9fe8aad5c6177af68a9bb0bd2e85e5a3069dce6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm with 30 external PDF links, many hosted on disposable domains, suggesting an attempt to distribute malware or phish for information. One of the primary URLs points to a keyword search for 'pocket monster hack apk download', indicating a lure for potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/wix?keyword=pocket+monster+hack+apk+download PDF link annotation
    • https://dilazewinu.weebly.com/uploads/1/3/0/9/130969594/kalebuzekefotip.pdfIn PDF document text
    • https://manedubel.weebly.com/uploads/1/3/4/5/134587872/nesikovugusawubula.pdfIn PDF document text
    • https://kagesurofuzesik.weebly.com/uploads/1/3/5/3/135303772/sexagaxiret.pdfIn PDF document text
    • https://gizizajavime.weebly.com/uploads/1/3/2/6/132695742/konese.pdfIn PDF document text
    • https://devanuwi.weebly.com/uploads/1/3/0/9/130969177/30170.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_4ef96687cd0b4ace83d7796135d1b9bd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc6769d1-43e7-4ec0-8887-0ee9f2bb6a5d/7607116827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/075ab8ae-61b0-4559-90bc-7ff66acfff75/vizupobutilegijolafodim.pdfIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_3b832e198eb740a1aa53bfbeb0df0444.pdf?index=trueIn PDF document text
    • http://wekameti.rf.gd/61583473018.pdfIn PDF document text
    • https://e055bcc9-c4f1-4c6c-8dcb-0912bf54750f.filesusr.com/ugd/b4a829_81d3fe107fca4f208d6ed323685a1fa0.pdf?index=trueIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_4b5ccbc893194e638040b20ce77c2ebb.pdf?index=trueIn PDF document text
    • http://rivowotow.epizy.com/81872683029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a379ffcc-fb9d-4d09-a192-a7f587db1f28/complete_jewish_study_bible_leather.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/59708100789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c337875-fbe8-4d34-84a1-77a0b2381ee4/78096631535.pdfIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_4826bbbf266e470d9e0f04f530f2b2fe.pdf?index=trueIn PDF document text
    • http://bulijisir.rf.gd/gewod.pdfIn PDF document text
    • https://167c2301-eccc-4e3a-a609-38a4f17b9bf8.filesusr.com/ugd/b1dabf_16bdb27b082b4c95a9cad839c5704097.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/king_kutter_72_gear_driven_rotary_tiller_tg-72-yk.pdfIn PDF document text
    • https://0926596c-b1e6-4473-87d6-fed2e709bfeb.filesusr.com/ugd/e2a635_50aafbf60f1f41ddac495074cd87aa0b.pdf?index=trueIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_4b8df8b76ad04167b8552d908a6a0ef6.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_7fe262ff0dd1465389b3be0b2473fc62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf0d831-6f17-440f-bc82-11011082ad82/blessed_be_your_name_lyrics_and_piano_chords.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 2880 bytes
SHA-256: 5f03d2c6bc08d28d18892b3fd5153044a2fff6aad81dd629dfd07635bf6cf50e
font_01_sfnt_off00010760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10760 5468 bytes
SHA-256: 11c75358daba8c2103f428f305026dad2ac23be0805493e418f52344bb4261e3
font_02_sfnt_off000119e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E1 12528 bytes
SHA-256: fa3d99250c877625e7c24574f99c34d5f8c7b361d235278bcf5fcc08f3e3ddb6
font_03_sfnt_off000141ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141EC 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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