Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f2148418555a91…

MALICIOUS

PDF

96.4 KB Created: 2021-05-12 04:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 09d2d075dc95b2dfa1aff7b3cdc26ce3 SHA-1: 2848a653f373188f50a985a6dec3b171bb412c11 SHA-256: a2f2148418555a91fc2fec75a587a8993d68b60b2b2f4429045a8c33887d0ad4
194 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a link farm with numerous external URLs, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains a lure related to 'My dish network remote isn't working', likely intended to trick users into clicking the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/strik?utm_term=my+dish+network+remote+isn%2527t+working PDF link annotation
    • https://tezubowaxax.weebly.com/uploads/1/3/4/6/134640868/3439984.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/hcjdjdx/16486737743.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/hfCtDRx/kobini.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/iagynhf/photo_studio_backdrop_design.pdfIn PDF document text
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/4946759.pdfIn PDF document text
    • http://rebituzugofebo.22web.org/22299955466.pdfIn PDF document text
    • http://wefinexof.iblogger.org/20852117091.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4846641-7ef7-4d68-8a9d-d630c004ba1c/wutilorabuzodexenez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5ad3fb-4380-4f23-93f9-f5bdda9f7eac/69248675988.pdfIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_706635feace04bd0beb366eb79aae7be.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_6c06a9504df947118f0736dbc2f65bcd.pdf?index=trueIn PDF document text
    • https://a6047d18-b57f-4fdc-88fa-dea7715a8642.filesusr.com/ugd/189347_9077868680de45adaf14722ffb6ebd38.pdf?index=trueIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_2635b96ca8d14e30b6c8824386b3b887.pdf?index=trueIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_beffd60e3247485a99e3ad2215023e13.pdf?index=trueIn PDF document text
    • https://7fd4abad-31f8-4c52-ae8e-93d0cc7f2af2.filesusr.com/ugd/910e70_8fa63db0c2394f94840620cbf6e4b24a.pdf?index=trueIn PDF document text
    • http://zevovalik.epizy.com/ekt_computer_science_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a19e4b-be6a-4c33-84c0-3043f25a14ef/59310939890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64f25e8-db7b-4e2e-81a9-b7688fde60f1/how_long_were_the_central_park_five_interrogation.pdfIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_edfea77172bf481c8354ce8d6377b55c.pdf?index=trueIn PDF document text
    • https://92fed17e-af34-466b-b3fe-38cd9ef27699.filesusr.com/ugd/192d58_71a60836879d4bda9a7afda21d673789.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12477 5296 bytes
SHA-256: 9ce5c685ebb4431266f615ab896b62ce9a009879159f8878dd17f92f44f52193
font_01_sfnt_off0001367e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1367E 11568 bytes
SHA-256: e6e23b666b36c3e094b4e8bc716f5ee40dc16e669ad953faf8917bc658168e13
font_02_sfnt_off00015e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E10 16360 bytes
SHA-256: 06045c161bcd0f8309af4ed72cc3550e013ec77afae4bf2221f135fd1087dca2

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