Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b67a34d6d5b24e2…

MALICIOUS

PDF

80.1 KB Created: 2021-05-09 09:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 59ba362148ade8ccfefe8cad634c5f18 SHA-1: 1576ba88b2e71201627c5c520da449aaebabc5a3 SHA-256: 0b67a34d6d5b24e20f80e1d9aa2fc4760f430b20d1e5239518fc2108caf47c9b
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/strik?utm_term=how+to+get+unlimited+money+in+farming+simulator+20 PDF link annotation
    • http://siwarezowagi.iblogger.org/85693002611.pdfIn PDF document text
    • http://wofeboz.66ghz.com/50390290405.pdfIn PDF document text
    • https://lolimoxozidexus.weebly.com/uploads/1/3/2/6/132682882/5f3e1f48e89a.pdfIn PDF document text
    • https://pijawofixogut.weebly.com/uploads/1/3/4/0/134017865/bcb62abd9828.pdfIn PDF document text
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/jifaju-xojujokegu.pdfIn PDF document text
    • https://numurivigafezu.weebly.com/uploads/1/3/4/3/134390613/suxixelilitumipewax.pdfIn PDF document text
    • https://rejurikin.weebly.com/uploads/1/3/1/0/131070637/niwexizise.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454280/normal_5ffd299200cf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383689/normal_60089d14199d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kisagoz/character_reference_sheet_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cebebd9-7e78-44c3-8a74-03869084dbb1/how_to_program_travel_on_chamberlain_garage_door_opener.pdfIn PDF document text
    • http://mowelafawugek.epizy.com/bugaboo_high_performance_footmuff_stellar_reflective.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/lockpickinglawyer_stack_on_gun_safe.pdfIn PDF document text
    • http://giluzufuropej.epizy.com/analogue_computer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a3350a6-1859-4fbb-90aa-97feb9b3fd53/89737299105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02641632-a29a-4dfb-8507-25c30756cc3f/asus_rt-ac68u_parental_controls.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/18_gauge_stainless_steel_sheet_pan.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/how_to_calculate_cycle_time.pdfIn PDF document text
    • http://sezesub.epizy.com/ffiec_guidelines_sdlc.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/lagu_ampyx_rise_ncs_release.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE67 5656 bytes
SHA-256: ed08044340da2ba7693d45819b87309a3130cdda196c230646a4e1320e9d3222
font_01_sfnt_off000101a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A7 19284 bytes
SHA-256: 6206377625f0d46ce0145f125b79deb6ca29a1bb66ce87e002e363edbb793411

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