Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf7e26f6c3e42c8…

MALICIOUS

PDF

69.8 KB Created: 2021-06-02 16:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e46f0b4e5a00c1f9a554de0eaa0cf770 SHA-1: 64ffb8339dd424a726f433bea8b50731d31a6852 SHA-256: eaf7e26f6c3e42c8565c18c384e4fcd20ee05b33cfe3f2fd15f4c5a929137491
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a large number of external links, suggesting a link farm or a phishing lure. The primary URL, https://laborke.ru/pbw?utm_term=alberta+chemistry+data+booklet+pdf, appears to be part of a campaign to distribute malicious content disguised as legitimate documents.

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
  • 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://laborke.ru/pbw?utm_term=alberta+chemistry+data+booklet+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425760/normal_600832a75285d.pdfIn PDF document text
    • https://migofaxukov.weebly.com/uploads/1/3/5/3/135394112/lutewilin.pdfIn PDF document text
    • https://siluxukazikuwo.weebly.com/uploads/1/3/5/3/135326211/duxigugu_wimozepo_nalipemepavoba_depejilivilufod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451356/normal_6026c8a9eac6c.pdfIn PDF document text
    • https://kibivatefa.weebly.com/uploads/1/3/4/2/134266698/fagenek-kopopadiz-vumideforisolu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405186/normal_6000c0992f0e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_605be40c37cac.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4454673/normal_60b65a1ce05c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5fd2dd2291d56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489259/normal_605c32d8a99fa.pdfIn PDF document text
    • https://xubawiki.weebly.com/uploads/1/3/1/1/131163512/gatolege-guvodekoseba-konekuti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465545/normal_5fe15a135a0d5.pdfIn PDF document text
    • https://maposege.weebly.com/uploads/1/3/1/3/131378999/madew.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/bozotujuz_bobevukazitul.pdfIn PDF document text
    • https://bazuditok.weebly.com/uploads/1/3/4/5/134590154/midevavejutigul_gimarerono_vavefo_lupabufiri.pdfIn PDF document text
    • https://lewelekokoje.weebly.com/uploads/1/3/4/3/134333059/tipixoloxanud_soxeri_xoteboxaki_goxabibexijif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482219/normal_6004c15e6fe7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460686/normal_5fe1ebcff029e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xawaren.pbworks.com/w/file/fetch/144420531/what_comes_after_big_nate_dibs_on_this_chair.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/w/file/fetch/144500655/4039706457.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_off0000d2c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C8 5688 bytes
SHA-256: 3786315b60a13bcf2ac7eb0c896abf8147e87e4ef19eef93f41d3b5aaa955367
font_01_sfnt_off0000e5f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F8 10552 bytes
SHA-256: ef70df00d0036144790e958a6096fedc4a5a2ffc37d43e4f7fc3fe69ddaa873f

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