Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6199142d5ea172…

MALICIOUS

PDF

76.3 KB Created: 2021-06-12 15:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: aac5d1472dac5b2a942641ac428b9875 SHA-1: 40b430fee4247d014551d7b1a4af00ec8a134dfb SHA-256: 0b6199142d5ea1728e3afd302f70eae691a76e8871b972841d54ce0a458d37a8
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains keywords related to 'movie songs mp3 download', aligning with a common lure for phishing or scam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://philabc.ru/pbw?utm_term=mca+movie+songs+mp3+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490371/normal_6004cb3a71a0c.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/0594aaaa0bd8c.pdfIn PDF document text
    • https://funiduned.weebly.com/uploads/1/3/4/7/134773133/00d227f2.pdfIn PDF document text
    • https://kagopibuxewiki.weebly.com/uploads/1/3/1/3/131398156/a7c10ed3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443344/normal_5fec7aaa71b76.pdfIn PDF document text
    • https://wesudami.weebly.com/uploads/1/3/4/8/134881188/jisofefo-sezajewuwogi-wajosafot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_606544e0d6467.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/1665603.pdfIn PDF document text
    • https://tebebutak.weebly.com/uploads/1/3/4/7/134744698/nafaborimoxefit-bitabobaj-wutowivopag-xasax.pdfIn PDF document text
    • https://supagerafigi.weebly.com/uploads/1/3/0/8/130874211/jetuneg.pdfIn PDF document text
    • https://gudogojowum.weebly.com/uploads/1/3/4/3/134366215/lunejazimebot-lorazesuf-xinowigunezubab-rotujajiki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_605072ac70a53.pdfIn PDF document text
    • https://nugemezan.weebly.com/uploads/1/3/4/3/134359438/5c0d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vulazojab.pbworks.com/w/file/fetch/144547932/33912523697.pdfIn PDF document text
    • http://zikasamu.pbworks.com/w/file/fetch/144709080/all_things_algebra_gina_wilson_answer_key_2015.pdfIn PDF document text
    • http://tatafeb.pbworks.com/w/file/fetch/145154940/gallery_ad_free_apk.pdfIn PDF document text
    • http://kedajawi.pbworks.com/f/13477238755.pdfIn PDF document text
    • http://faxamom.pbworks.com/w/file/fetch/145026255/76998118700.pdfIn PDF document text
    • http://pujexusineg.pbworks.com/f/38055947230.pdfIn PDF document text
    • http://gitefov.pbworks.com/f/jackbox_party_pack_7_mac_download.pdfIn PDF document text
    • http://zafasuvolo.pbworks.com/w/file/fetch/144554034/86296215682.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 5616 bytes
SHA-256: 77b643344c423ccc387a93acf8a0cf87b5751c17ddbc4c1fb5ab6de8a2ceb858
font_01_sfnt_off0000ff08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF08 10712 bytes
SHA-256: 43c57cfb2aea96b10175801ce5123d61fb7b321418e2464e4d39004064eab4f2