Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c022f8996c45c12…

MALICIOUS

PDF

82.0 KB Created: 2021-03-27 11:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ed5f20f913683b89e07fecb5986463c4 SHA-1: 53ed5bde9a4bab02302428792990109a002d2321 SHA-256: 8c022f8996c45c127832fac519377ab43fc729121922440da9a294023ee0af96
156 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 0.9994

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
  • 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://vilenefex.ru/award?keyword=apollinaire+poems+pdf PDF link annotation
    • http://pifovabu.getenjoyment.net/wotexedasebipitofadopi.pdfIn PDF document text
    • http://muzomabavima.medianewsonline.com/does_subway_calories_include_bread.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421050/normal_5fc9aea648e73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490725/normal_5ff5b9e3837cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501027/normal_5feb880426f48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422912/normal_5fc62ac751bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450876/normal_605d9d2c0c2be.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/thallus_organisation_in_bryophytes.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/72853876898.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_f956a079a4a24da182ad481045804433.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/how_much_is_blue_ribbon_foods.pdfIn PDF document text
    • https://e1318bff-d970-45e2-bcea-45481503a18b.filesusr.com/ugd/75a96d_4a53b22c5c624830be8c85116c3a39d2.pdf?index=trueIn PDF document text
    • https://13cfbe10-32e4-4d7a-9072-8dbd3280e6b8.filesusr.com/ugd/994e9e_1276a95b15344f7993d4072187244596.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lofese/roweguzapoje.pdfIn PDF document text
    • https://5f384421-c3d0-4b4c-85a6-d3745974446f.filesusr.com/ugd/40006b_a484cab6552e44efa0fff31842a2e887.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/bhoomika_malayalam_movie.pdfIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_5078657e85584cbeb26b5c94f124a14c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/solonebosop/63299933939.pdfIn PDF document text
    • https://efe523a3-d756-4f55-ba91-412f3a718e00.filesusr.com/ugd/236571_76537b85a6434d768522485aa4993333.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukusa/define_trop_french.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/91315432777.pdfIn PDF document text
    • https://1682489e-d94b-4f22-b6a6-c8ecb623ca2e.filesusr.com/ugd/5f226e_c53bf4597223424ead4992ff600f4a45.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kudefem/21601063380.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF2 5176 bytes
SHA-256: 731d95884d3e69fad40624db98aca69b21e9cba2c39080353c6a5f529d0697b0
font_01_sfnt_off00011071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11071 13192 bytes
SHA-256: 57e5fcafa4fdde883ce86dd8977419a802a28a4df279e4826eceda49da9fd0af

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