Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed69aa013ac5b324…

MALICIOUS

PDF

82.8 KB Created: 2021-04-03 06:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14669d8a49ee36f90e037fe443254fc1 SHA-1: d2c52ccc75bbb2df2172bc0c72a6779c53d062d9 SHA-256: ed69aa013ac5b324fad3616f0398d2dd3d24365123ab22e0a868f3574c1c2ca7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate that the document is designed to redirect users to potentially malicious or deceptive content. No scripts were extracted, but the overall structure points to a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=the+attention+revolution+free+pdf
    • https://cdn.sqhk.co/bajipugotox/OifCIji/animated_textview_android_github.pdf
    • https://fukimeremunosav.weebly.com/uploads/1/3/1/3/131379236/5116b35658aa.pdf
    • https://cdn.sqhk.co/dederubap/RShcchj/32243933969.pdf
    • https://cdn-cms.f-static.net/uploads/4384152/normal_6029fb4faf77f.pdf
    • https://donabetolemi.weebly.com/uploads/1/3/1/6/131637402/vogokur-rikelezop-putazis.pdf
    • https://nuxikasupi.weebly.com/uploads/1/3/4/5/134528480/6672970.pdf
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/panile.pdf
    • https://cdn-cms.f-static.net/uploads/4382406/normal_6028e69cf050c.pdf
    • https://rexojufupul.weebly.com/uploads/1/3/4/5/134523972/fomasimil_sewovijas_jagupexomepinad_budefivuw.pdf
    • https://pugotujokodi.weebly.com/uploads/1/3/6/0/136056651/zurata.pdf
    • https://static.s123-cdn-static.com/uploads/4375528/normal_5fff08232cdf8.pdf
    • https://cdn-cms.f-static.net/uploads/4495994/normal_60514fffd3b67.pdf
    • https://cdn.sqhk.co/kisasizaro/dclVcI7/amazement_in_a_complete_sentence.pdf
    • https://cdn-cms.f-static.net/uploads/4480145/normal_60319b9a49dd6.pdf
    • https://nipixejewawowe.weebly.com/uploads/1/3/0/8/130874539/xurunemakenojud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_1605229fb0b44bc3858aabe9f5f366bf.pdf?index=true
    • http://sebedugufafa.rf.gd/65430738322.pdf
    • https://cd9ed9ec-87d1-42be-9198-0b2de6c1db4d.filesusr.com/ugd/158fb9_01344df4af804f599ac9bdd03ab519b5.pdf?index=true
    • https://877305ac-a74e-4e93-918f-f866ec7622df.filesusr.com/ugd/0dac30_7303f9ecfc5f4a4eab3d0464be7e448d.pdf?index=true
    • http://puwojewemuxa.epizy.com/vopilugonisoravexumirazud.pdf
    • https://674cbc6f-b08c-4a01-a8c9-516be953d1c9.filesusr.com/ugd/e745be_aa1c582bda5844e7ac523bfceb45cc25.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010893.bin
5a91797345e7ea7f92e530b3cb90b8f7ae90979167e7b43b00396ec0046a3b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10893 4960 bytes
font_01_sfnt_off00011976.bin
e3264a4028f8c167835f60597fb9a34284a1ec93b2a47785f0eb00d8704f99ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11976 10680 bytes

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