Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc5b96409397032…

MALICIOUS

PDF

80.6 KB Created: 2021-03-27 12:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 1af80466278a62dbfa31b8925b078230 SHA-1: 80ac0e64dc2c5ec6b4bed5ad1b890a32d81e3ff8 SHA-256: 7bc5b96409397032680588a43c4d1f96d1d1233841c72d3bfc92274fb7e88c0c
186 Risk Score

Malware Insights

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

This PDF document functions as a link farm, presenting numerous external links disguised as search results for free PDF downloads. The primary URL, https://soxebez.ru/award?keyword=business+model+generation+deutsch+pdf+free+download, suggests a lure for potentially valuable content. The presence of a large number of distinct hosts and disposable hosting services indicates a tactic to distribute traffic and potentially evade detection. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://soxebez.ru/award?keyword=business+model+generation+deutsch+pdf+free+download PDF link annotation
    • https://fatomomome.weebly.com/uploads/1/3/1/6/131606630/dizabavaxabo-romidesogor-soburavagosugo-xeteni.pdfIn PDF document text
    • https://gimiduti.weebly.com/uploads/1/3/4/7/134711596/gonewejizates-koxokeladux.pdfIn PDF document text
    • https://bowetupivivuz.weebly.com/uploads/1/3/1/4/131437724/bojat-texinave-venobuxukijaj-nagegunokuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/gg9hiIN/37646354368.pdfIn PDF document text
    • https://kevavabine.weebly.com/uploads/1/3/1/4/131406582/4201797.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/QhfX1V7/38712043898.pdfIn PDF document text
    • https://xuvurabog.weebly.com/uploads/1/3/2/6/132696285/5065488.pdfIn PDF document text
    • https://zegikawa.weebly.com/uploads/1/3/4/6/134640481/ligev_gelenudilabe_tisem_gupenawebik.pdfIn PDF document text
    • https://sujugixuguxidi.weebly.com/uploads/1/3/4/6/134615921/1b26f18ee6.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/PEcUgdT/f1_mobile_racing_2020_gameplay.pdfIn PDF document text
    • https://rubazepenomul.weebly.com/uploads/1/3/4/3/134324915/c3f21a2d39ec6.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/zAgeyia/sepaditujevowos.pdfIn PDF document text
    • https://vukexelisijaka.weebly.com/uploads/1/3/1/0/131070195/wolozubajube-sejoje-wigixino-jasubukefizidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470016/normal_602e2462cd205.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494430/normal_5ff622fdd5c7d.pdfIn PDF document text
    • https://cdn.sqhk.co/donewipimep/FMjfgiS/read_music_notes_guitar.pdfIn PDF document text
    • https://cdn.sqhk.co/xezalagefog/jXLqAul/48753878244.pdfIn PDF document text
    • https://dubujede.weebly.com/uploads/1/3/4/6/134607356/tepug-muregaliruxuda-povibalijokefi.pdfIn PDF document text
    • https://cdn.sqhk.co/miviterul/djiJHTE/3285083853.pdfIn PDF document text
    • https://cdn.sqhk.co/faxinomitux/cchghje/ringtone_maker_app_for_spotify.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zetamox.epizy.com/how_to_iron_on_embroidery_stabilizer.pdfIn PDF document text
    • http://turizavoge.epizy.com/cerebral_palsy_treatment_physiotherapy.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/homestead_dam_betsie_river_fishing_report.pdfIn PDF document text
    • http://zorogimejovag.rf.gd/7563634045.pdfIn PDF document text
    • http://dijutago.rf.gd/19496029986.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_off0000fa48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA48 5712 bytes
SHA-256: 42ce8f999c3bd0a372a54926e38678f7ec8c0c044a5f317f5e13458afed51a53
font_01_sfnt_off00010da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA5 11532 bytes
SHA-256: 22f634234d25af33e11bf225469e71d41d9b0ce728b5e89a62f22bdae8afcc50

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