Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9a3642b909bc64…

MALICIOUS

PDF

77.5 KB Created: 2021-03-29 21:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 30d3bac216de8100750f27a3850bc554 SHA-1: af7d3adce8b48e2c472c244a56a90b97a6583cb3 SHA-256: 0c9a3642b909bc64f3b9301e9e8e56b41222e437866c0f88b62d033fa79e4ea3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The document body, though partially corrupted, suggests a lure related to an 'Awas Yojana application form online'. The presence of a PDF_SEO_LINK_FARM heuristic and a high ML score strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is used to host and present these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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/123?utm_term=awas+yojana+application+form+online PDF link annotation
    • https://dazifefizax.weebly.com/uploads/1/3/4/8/134854215/5332814.pdfIn PDF document text
    • https://wusowekop.weebly.com/uploads/1/3/2/7/132741020/342487.pdfIn PDF document text
    • http://asia.kiwi/91982599069nx927.pdfIn PDF document text
    • http://neip-forum.fun/dajezanadapujirerinajerux9rf28.pdfIn PDF document text
    • https://lizotolagodega.weebly.com/uploads/1/3/4/4/134495854/3e7c8.pdfIn PDF document text
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/672865.pdfIn PDF document text
    • http://draiwenstore.online/happy_birthday_to_you_sheetal_imageouui1.pdfIn PDF document text
    • http://antonioita.fun/18954139339mcpkf.pdfIn PDF document text
    • https://rilinozeni.weebly.com/uploads/1/3/1/0/131070652/jedive-zamalerev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wukara/mcgraw_hill_biology_lab_manual_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/41006752412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee8fb83-6a2e-46b9-a2a4-69b9081839af/werepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d82f7b2-0e32-4962-9237-0cf1ed321180/graco_my_ride_65_front_facing_installation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/404ddccc-cee0-47d8-9ffd-cad2a65531bd/korozu.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/stained_glass_slope-graphing_linear_equations_answer_key.pdfIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_3ef2717db7a34928b8522cd13523f887.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/jepivuwuvuganiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a04e4027-69a2-4651-b953-50b725297166/jeffs_original_rub_recipe_copycat.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/12820417147.pdfIn PDF document text
    • https://709e7e89-b264-4d73-b757-064736ed86f1.filesusr.com/ugd/f523c3_6f209e471b2d421aa682423a1efa9e0e.pdf?index=trueIn PDF document text
    • https://83bd47e3-138d-48d8-8d00-514fe13b91b0.filesusr.com/ugd/c87a2f_0b9c05a9dc1f4a33a851d20bfa1e2d85.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64c4b36-7134-4c5f-aeee-76eb60abf0c9/can_you_take_the_written_driving_test_online_in_new_york.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A4 5208 bytes
SHA-256: 9a6ad6b33f1b15b48a2e04ecc5431d785fd460e59f6602efc2797ee41790167c
font_01_sfnt_off0000f654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF654 10576 bytes
SHA-256: 827bd83c371cdb2f76ea855533eda8112d2bdead620ce603b0e3ab398278be2d
font_02_sfnt_off00011aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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