Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe029afbe206b0fe…

MALICIOUS

PDF

68.6 KB Created: 2021-09-29 00:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d64a55692788e31d3968374a199829d2 SHA-1: 04869f931ec0532bedb1b858b277420e47ac1537 SHA-256: fe029afbe206b0feb13e36276dfa0e5d2a4ff7aa96e9e40eaa999983d316b97d
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://glavis.biz/userfiles/file/2555252122.pdf In PDF document text
    • https://kanalprofi.at/UserFiles/file/wamolelerixaladawalejuket.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents/files/29934309654.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142f241c972d.pdfIn PDF document text
    • https://www.thic.net/plugin/ce1/ckfinder/userfiles/files/topemipuwiviferi.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/bikagamejosesunurumenija.pdfIn PDF document text
    • https://internationallanguagenavigators.com/media/94995251097.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/kodixoxafetu.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/4984070853.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16136521ec94f2---35245123178.pdfIn PDF document text
    • http://uktohabbarijamalta.com/files/file/dukedawixajamazolelonexag.pdfIn PDF document text
    • https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/rotilexeniv.pdfIn PDF document text
    • http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/45759208788.pdfIn PDF document text
    • https://lyna-garage.com/htdocs/cljr/data/files/xotawupusifokowepaja.pdfIn PDF document text
    • http://twfbs.com/ckfinder/userfiles/files/jasilidetataxodiz.pdfIn PDF document text
    • https://ww150002.linebot.net/upfile/files/20210924130113.pdfIn PDF document text
    • https://www.sistemkabin.com/ckfinder/userfiles/files/68017437674.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/78781421072.pdfIn PDF document text
    • http://lj-group.cn/upload/files/69596668363.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/6312682051.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/15119724826.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=transfer+phone+numbers+from+android+to+iphonePDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD88 15216 bytes
SHA-256: 469b51aa2950eff55640fe747b48395df25396f6f90e6e0f58d8da35f9cf04bd
font_01_sfnt_off0000d414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD414 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2B 10920 bytes
SHA-256: 7113bc57d7a637ae7c344ce6b2ed1aeabdd36231fee43a4bbcc9d1f6db4413f6