Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9230481ba938e8…

MALICIOUS

PDF

71.9 KB Created: 2021-03-14 15:05:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b9753cdfcf4b37a761d64e4c0cbab73c SHA-1: 5b98f4ebedd017dfeb94c88023780a624b77cf9d SHA-256: 3c9230481ba938e8b429242cd05550b5a2fdd8d7390f8db06655d30003ab8492
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 0.9991

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/123?utm_term=buku+rangkuman+biologi+sma+pdf PDF link annotation
    • https://kekageguva.weebly.com/uploads/1/3/0/7/130776826/dakanu_kanitikige_rezidivibap.pdfIn PDF document text
    • https://zinikigi.weebly.com/uploads/1/3/1/4/131453967/784da17.pdfIn PDF document text
    • https://kulegireketo.weebly.com/uploads/1/3/5/3/135325025/e2485d559d3f6a2.pdfIn PDF document text
    • https://sifavebizibi.weebly.com/uploads/1/3/4/0/134040704/7859013.pdfIn PDF document text
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/xazizapukekop.pdfIn PDF document text
    • https://malojedatev.weebly.com/uploads/1/3/0/8/130813840/dagisex.pdfIn PDF document text
    • http://gomededow.22web.org/ethiopian_orthodox_bible_in_english_81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_60465c053fb5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5fea200ede094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454047/normal_6021d1fca7bd2.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/ejUicFG/mobile_home_elite_investors_ig.pdfIn PDF document text
    • https://dezekebewefe.weebly.com/uploads/1/3/4/7/134731304/tudakukitagazelemid.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/dkjfQWp/27992022074.pdfIn PDF document text
    • http://jevutodirawis.iblogger.org/dunufilitezid.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/bec640cac0bccd.pdfIn PDF document text
    • https://naxaletuzo.weebly.com/uploads/1/3/4/5/134508506/75458eee.pdfIn PDF document text
    • https://cdn.sqhk.co/jifonakilux/hficjcN/big_bang_theory_cast_degrees_in_real_life.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/lifkhig/febiz.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/wajibile/zuvewimujusejivekisuvofi.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/63048556147.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/45324968524.pdfIn PDF document text
    • http://wakojemoxu.rf.gd/difference_between_autocad_2020_and_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/yowhatsapp_apk_v8._0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10B 5300 bytes
SHA-256: dd7190cdc85a84ef0ad049c933bebb2a0f133c32ca1188b1e920189bfb86104d
font_01_sfnt_off0000e2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E3 9704 bytes
SHA-256: 767a5f6dd4cdf3472154abee21fdefb1ff1f9d3eb5d71b617199408953abc845
font_02_sfnt_off00010439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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