Malicious PDF — malware analysis report

Static analysis result for SHA-256 006c9d9c2c8547c7…

MALICIOUS

PDF

126.2 KB Created: 2021-03-08 05:23:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3b42f5d396aa26fe4ff059561a2e75aa SHA-1: cf020d31783257c67f8c436ced5beff7c2a45402 SHA-256: 006c9d9c2c8547c7410f772e703489a8dd0046f63b36cb39fcbb3e84a8b4bb1f
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URLs likely serve to redirect the user to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://gimoguvi.ru/aws?utm_term=top+10+strongest+economy+in+asia PDF link annotation
    • http://bopugafuwu.scienceontheweb.net/who_is_the_bear_in_the_revenant.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/Ehaghfj/powered_hang_glider_price_china.pdfIn PDF document text
    • http://zukasegepeni.22web.org/what_causes_adrenal_insufficiency.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/higgggv/75170151969.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/jd9ghb8/futovigiboxuluru.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/43153095967.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/jhzljjA/husky_puppy_wallpaper_iphone.pdfIn PDF document text
    • http://zutelotojenexop.getenjoyment.net/52585893911.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/6eda889e-3ba8-42f5-949b-760d265017ad/70926915213.pdfIn PDF document text
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_220c92963226453cbc393c15afe1688f.pdf?index=trueIn PDF document text
    • https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_e747d6ea69be4a7b8ba9e0a1c8801b8e.pdf?index=trueIn PDF document text
    • http://dapodakek.rf.gd/29077298841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84e2e4af-df33-4949-838f-ef0b13a7f411/22934236584.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/how_to_be_good_at_public_relations.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/pikubopaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccbd6a1f-cdae-49d1-b934-f0935cb0b7a2/fudagitamefarokuvebedapi.pdfIn PDF document text
    • https://47e4df30-8702-49a4-8bd5-327e1546ff06.filesusr.com/ugd/379272_5fca96d67a214b63a8fd7a46227c2af5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b6fcf05-2f33-46c4-9331-499fb4cdbf7a/wuzonubamabewunik.pdfIn PDF document text
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_cddb40e27def45068fb4b67279d57918.pdf?index=trueIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_4f21281ed7ab4e0b8e326f3d1771a214.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B05E 5468 bytes
SHA-256: 5bf23c32e10591072189a016c4387671a968c2d7a3c31c20fda82e1c03dd684c
font_01_sfnt_off0001c2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2F2 12132 bytes
SHA-256: f77b70025ba4f4a18095329be8ba192313c1c64e6f448df1ae35a8b67246b3cf

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