Malicious PDF — malware analysis report

Static analysis result for SHA-256 789dcbc79b220d38…

MALICIOUS

PDF

71.5 KB Created: 2021-05-16 00:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fda7e7ed1b1eee0d45b10593537e2a07 SHA-1: 90617daa74eab5e3d4cf4ccf58fa8f7694bb8838 SHA-256: 789dcbc79b220d3880c5cbf2146a7ba57e4da1ff6ccc13c407bc06cae55585da
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 0.9998

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 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://pelibifir.ru/strik?utm_term=mechanical+project+engineer+jobs+in+mumbai PDF link annotation
    • http://nout-prokat.website/85601830931zcffq.pdfIn PDF document text
    • http://pihodze.com/dmc_embroidery_floss_color_chart7f4w5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_6032f7c2427c8.pdfIn PDF document text
    • http://weinmvc.net/the_cw_2020-_213u32t.pdfIn PDF document text
    • http://optalpha.com/intercessory_prayer_for_church_growthqsnlj.pdfIn PDF document text
    • http://termo-nord.tech/nelunuhgiea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446260/normal_60459d1e27ad7.pdfIn PDF document text
    • http://esagafow.fun/dobetigir3ab6t.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/5057274550535j3z.pdfIn PDF document text
    • http://azakalaza5.xyz/timaduzomm0ke5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5fef91891edfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_513846196d30416595ab737317f50e50.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/remeranexe/kazawuduzeduloxijavulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc9c8299-fba4-4171-88e9-cb918dca0c40/2020_toyota_camry_xse_awd_for_sale.pdfIn PDF document text
    • https://7d7e9a41-1eea-4c72-a0b8-c0e3d642de37.filesusr.com/ugd/513cfa_7131df285aa74d70acd5c6824a358290.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e193b1ba-f112-42ee-a395-b87f6e4887ae/47896751164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad521d1-eb73-4af0-9edd-d935f86c6cb8/whirlpool_microwave_wmh53520cs-2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/nusipunaxesonofava.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/project_orion_tv_show.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_off0000d7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C9 5568 bytes
SHA-256: cdc88472024311efff8e2a73fb8e90dec7746ecc2d3e263a8323be78f917254e
font_01_sfnt_off0000ea9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9B 10984 bytes
SHA-256: 0ba84e485a050c916552af95876dd13727d2a7f9a5c2497d82eb801c291b2836

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