Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d914a922aa0471e…

MALICIOUS

PDF

103.1 KB Created: 2021-03-27 12:14:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6106c95c9ca44bd2ad5bb801a9bc70cf SHA-1: 5d49b64adc46fe85286de943b9a2c40288b95568 SHA-256: 4d914a922aa0471edde0a42fc211161cd593c1d0d0500dd66ca823bd949852fd
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://soxebez.ru/award?keyword=trait%25C3%25A9+de+versailles+1918+pdf PDF link annotation
    • https://zunenevalomedo.weebly.com/uploads/1/3/4/8/134855990/6284487.pdfIn PDF document text
    • https://kaxawoxo.weebly.com/uploads/1/3/1/0/131070710/7683184.pdfIn PDF document text
    • https://kasababafaraw.weebly.com/uploads/1/3/5/3/135336348/durejowibaxi-ladog-gedibibeta.pdfIn PDF document text
    • http://venira.su/taco_bell_beef_taco_nutrition_factsvvnnw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_604eaeb54719c.pdfIn PDF document text
    • http://test123test.xyz/9157404088cmm1z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_600f03143e4c6.pdfIn PDF document text
    • http://begemotiks.space/rorixarolilwbmt.pdfIn PDF document text
    • http://gizovivomiz.getenjoyment.net/little_chief_smoker_recipes_salmon.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/ijighdz/duruxa.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/jiwafaguwo.pdfIn PDF document text
    • http://memisada.mygamesonline.org/2245683502.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/64588647630.pdfIn PDF document text
    • http://lyudi23.ru/dia_a_dia_fisica_y_quimica_2_eso_matkk56b.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/fEOsaji/dialect_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/D8ifij3/27208998277.pdfIn PDF document text
    • http://mebel-albero.ru/26523922398vytgd.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/ihhgxif/first_strike_t15_pdw.pdfIn PDF document text
    • http://jemulobapamiwu.mywebcommunity.org/66624326919.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://49b7c339-fea6-4bb3-bf7b-ca47af5263df.filesusr.com/ugd/6ca12d_a1ca2fb34d4f44a6b84d96ce061dab67.pdf?index=trueIn PDF document text
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_7f5c6bc8b5c944a3b19a790815c6c8e7.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_off00014e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E50 5588 bytes
SHA-256: cade4f69dfda0420f4c4f04135eb8611c1c153c1a4fce114e07acf0d8cae00b3
font_01_sfnt_off0001611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1611D 14452 bytes
SHA-256: fe7fa565d9344586edf136cb98d92ad6193006a17bbc8af80460ead46fbe90ad

Open this report in the interactive analyzer, or submit your own file for analysis.