Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddb6adb8abdd198c…

MALICIOUS

PDF

74.5 KB Created: 2021-04-08 05:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 26a1e8f6724875381acc1af768258a98 SHA-1: 6799f8032fa2d42cd8030deaba0c084632de73b6 SHA-256: ddb6adb8abdd198cdee508f6eb061494178fdc338da50563aa156c6b9ee01033
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 0.9993

Heuristics 5

  • 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 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://fokemale.ru/123?utm_term=osrs+solo+dks+guide PDF link annotation
    • http://pojibuvuj.mygamesonline.org/best_rated_electric_pasta_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/mewixamok/iQ66igN/pudidegodubefuvumusumovuf.pdfIn PDF document text
    • http://getchambre.xyz/sinujupinaxqrj0c.pdfIn PDF document text
    • https://cdn.sqhk.co/xijodepub/hijbmjh/62851851414.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/icghaX8/nilunipexamowisirojod.pdfIn PDF document text
    • https://kumeboxisadinur.weebly.com/uploads/1/3/4/6/134684257/01a0b79b6.pdfIn PDF document text
    • http://dorightunion.com/313093303244p8xo.pdfIn PDF document text
    • http://nigemutekilum.mypressonline.com/comment_couper_un_en_plusieurs.pdfIn PDF document text
    • http://megantv.site/4171906664087z42.pdfIn PDF document text
    • http://womizepivilora.sportsontheweb.net/sufibame.pdfIn PDF document text
    • https://kowezuvive.weebly.com/uploads/1/3/4/6/134603832/4580145.pdfIn PDF document text
    • https://dokakuzod.weebly.com/uploads/1/3/4/8/134884054/babumode_bozevakoxaxoxif.pdfIn PDF document text
    • https://gisonegeviwobi.weebly.com/uploads/1/3/1/3/131383673/fubonoj-bolonevodus.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/suxuzubojut/89670960811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/401eab5e-42ad-4954-ae1f-0047e35f0af6/62090143871.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/minoxidil_in_natural_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d356cd-6053-409d-a749-3b0e213d99ad/gujenuxozarelawujow.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/basic_electronics_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14e3a80-f9d2-4f65-85a5-85fdb803d17f/netgear_wn_2000_rpt_v2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/graphic_novel_artists_for_hire.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/xageduwa.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/parallel_lines_on_a_graph_have_how_many_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48297605-05ad-43f7-8055-008e04803678/mexevapovasanulaxenofedax.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_off0000e6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C4 4876 bytes
SHA-256: a5e2ef61a229a7940ec97fd5e1d0f496c4f3ee214511ecada8b5bfd3a84ad941
font_01_sfnt_off0000f763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF763 11124 bytes
SHA-256: 0a172b2bcb9c04ce544b3d742eeefe5a47a0d29dbe26be74342f48fc97c146df

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