Malicious PDF — malware analysis report

Static analysis result for SHA-256 127807d64de7a457…

MALICIOUS

PDF

73.3 KB Created: 2021-05-14 08:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 456968a8f777b6a59457d5e0baebf23a SHA-1: 1e20cea7abba7adb702c118aa3eccbd95e1a3add SHA-256: 127807d64de7a4575a3bd50a82755f752f3819a6a554343cbd9ffcb2fe69a5d7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9990

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 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://jumiwimov.ru/strik?utm_term=discovery+2200+metal+detector+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471945/normal_60103dca3dd58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495042/normal_606b50df32464.pdfIn PDF document text
    • http://dadibexibanewil.iblogger.org/instalacin_de_gas_domiciliario_la_paz_bolivia.pdfIn PDF document text
    • https://cdn.sqhk.co/tekonunise/dhepghj/final_fantasy_vii_remake_episode_2_release.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471959/normal_600aa7f95e8f8.pdfIn PDF document text
    • http://rixadixiji.scienceontheweb.net/gibesikeseguzot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_605d75e9eeca6.pdfIn PDF document text
    • http://beritox.medianewsonline.com/kipejib.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/ijBOgiP/pedro_hernandes_dias_lopes.pdfIn PDF document text
    • http://retamos.mygamesonline.org/koxusajud.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/gePxrdg/wamev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/zainab_al_ghazali_death.pdfIn PDF document text
    • https://6648aa49-deb3-4d6f-81a8-a63cc7a297fb.filesusr.com/ugd/38eac1_552497cf2fab474cb3a7a33861c905e5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/behringer_djx750_mixer_effects_list.pdfIn PDF document text
    • http://dojezemuxeg.epizy.com/82783924222.pdfIn PDF document text
    • https://19004eff-8f5e-45b0-b15a-9fbdbd99e39d.filesusr.com/ugd/578ea4_18c2d0e3f11e4c2b85876aa347efb13c.pdf?index=trueIn PDF document text
    • http://naburonip.myartsonline.com/applied_linguistics_by_guy_cook.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/60534106576.pdfIn PDF document text
    • http://vojapulipono.epizy.com/employee_engagement_powerpoint_templates.pdfIn PDF document text
    • http://zafazemebotege.rf.gd/89861904056.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/klasifikasi_space_maintainer.pdfIn PDF document text
    • https://5a98ae10-8c7e-48da-b83f-9bcbc644cfa3.filesusr.com/ugd/9a8764_e59f83619c2a4b81b82b44154402e268.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pigolo/philips_shaver_9000_trimmer.pdfIn PDF document text
    • http://leporib.epizy.com/xevatukigufa.pdfIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_82b53d4b7d934348b4cf37119653e9cd.pdf?index=trueIn 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_off0000ddc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC2 5656 bytes
SHA-256: f609793def285fc42a1898d33e863ec11c3eaacd06cc1c077d0e934fb88e5183
font_01_sfnt_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 12124 bytes
SHA-256: e6b71b15917f2049b28677e483ac0dfc0c35c0df4488fe2be97e688b55cfaf87

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