Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8704d973d226392…

MALICIOUS

PDF

76.2 KB Created: 2021-03-31 21:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d2a0a76df08227e09c9352b4998e95d SHA-1: 720df181d33d501299b83287119dd3caa7185cdc SHA-256: a8704d973d2263923f383164a8887169951534e1205444caac8731d6a2fd760a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO manipulation or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=jewelcrafting+leveling+guide+legion
    • https://cdn.sqhk.co/zaweniwefi/hggdiai/particle_fluid_live_wallpaper_n_play_apk.pdf
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/kulones.pdf
    • https://wewofubajibopa.weebly.com/uploads/1/3/1/3/131381003/7d9b6f.pdf
    • https://nigikejogu.weebly.com/uploads/1/3/4/9/134902550/57ec4fbcd33b.pdf
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/e812bea06bfa.pdf
    • https://cdn.sqhk.co/dagizonu/xMiiPja/75925582525.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_d2c88b702b2743fdadb394cbfe6b29be.pdf?index=true
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_02d908983a5e4190abd503d2dd2c6424.pdf?index=true
    • https://3682d434-6e27-4ac8-9ac2-d3ec24fa429c.filesusr.com/ugd/9b5f63_ccfc41ccd56542a29824f98108923999.pdf?index=true
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_24ed8b1ee54c41c791fc20aaa40c6026.pdf?index=true
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_f6bb348888674ad4bbab3c70b6f60fb8.pdf?index=true
    • https://s3.amazonaws.com/tidigudetefumof/dewalt_dw734_dust_hood_screws.pdf
    • https://s3.amazonaws.com/vokeri/2012_jeep_grand_cherokee_laredo_x_for_sale.pdf
    • https://s3.amazonaws.com/fakuguvil/sheetz_headquarters_claysburg_pa.pdf
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_dda7dc58c71c4705b1e1820dfb5070ab.pdf?index=true
    • https://s3.amazonaws.com/wujodibu/used_to_you_ali_gatie_song.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/odometer_check_report.pdf
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_10a3cb66c9af4a97ac83f1efbc8bf0fb.pdf?index=true
    • https://30fe55a9-f0c7-4aec-9bf5-b9d2225d99a8.filesusr.com/ugd/c4a51e_37b01d2f62c74402aa8f5c0cc703dc1b.pdf?index=true
    • https://s3.amazonaws.com/gotitibekovi/75165375219.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed4a.bin
fc00592e7d2b278c1e0a7bb12a582b1bd51f2fef9c3d3a25c738c029323a9b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 5152 bytes
font_01_sfnt_off0000ff02.bin
288a6722abf8921a5d3fa6d003c8b7c522c126e2df5d5633e2293be198af0366		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF02 10580 bytes

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