Malicious PDF — malware analysis report

Static analysis result for SHA-256 0540d62ff0c14740…

MALICIOUS

PDF

72.9 KB Created: 2020-11-11 06:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 36d1137de3b29d54663fef3ac1e564a1 SHA-1: 13d8aa138a56ec79697dbbae8b79f907ca617c1b SHA-256: 0540d62ff0c14740e08446f09eda82c007fb1451578dff6463ec8ae395983c78
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Secretary of state gaylord mi', likely intended to trick users into clicking malicious links. The presence of numerous PDF links, many hosted on Weebly, indicates a link farm designed to distribute malicious content or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?keyword=secretary+of+state+gaylord+mi In PDF document text
    • https://fevuleniwawe.weebly.com/uploads/1/3/4/4/134476097/zejofaberupose_fimigoxazigum_tawimupepa.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/vatuwof.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/migifirugolojos.pdfIn PDF document text
    • https://jojurofi.weebly.com/uploads/1/3/4/6/134666092/sefifeken_mesuf_lulaziz.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/746383.pdfIn PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/3726983.pdfIn PDF document text
    • https://ralevenewuw.weebly.com/uploads/1/3/4/4/134464099/rapigubenowogedofika.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://uploads.strikinglycdn.com/files/280541b5-e8b7-4da6-98f1-6735e1385075/62118196546.pdfIn PDF document text
    • https://s3.amazonaws.com/xotorulu/ffxiv_summoner_macro_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/goporo/tim_robbins_series.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/ps4_app_downloader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49bdec1-e1bb-410c-a576-e63c143b7d85/fortnite_scrim_discord_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/65804750323.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/25888189040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5138d43-aeec-402b-814b-644b8d5b183f/jim_beam_suite_yankee_stadium_food.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/18537974769.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/49630177240.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_off0000d483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD483 5228 bytes
SHA-256: 6f9d751c48cac8ca93d457afe640c165deeafa74c0b2a19299d7cf64ed4d8eb1
font_01_sfnt_off0000e64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64E 10064 bytes
SHA-256: 2c2af8e4db13403d5906ca8977cc5c481b8e51a906a381b18a4afc59bf508ba5
font_02_sfnt_off000108c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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