Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74d0eb608309ce0…

MALICIOUS

PDF

74.3 KB Created: 2021-03-29 09:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: eff5075f129bb29de34f3000e8871f44 SHA-1: 55f99ef08ddd0fceded1ba3280f55171f39405b9 SHA-256: a74d0eb608309ce0e02b704ebf2a2c05af1780235709074133cd6324c0307a4f
164 Risk Score

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/award?keyword=descriptive+english+book+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/tatidukigag/r0HicMS/brockhampton_ginger_full_album.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/jchbMjc/18567939889.pdfIn PDF document text
    • https://xeromikivato.weebly.com/uploads/1/3/2/6/132695960/012539c26d70f23.pdfIn PDF document text
    • https://dolilifiwu.weebly.com/uploads/1/3/4/4/134401054/8701623.pdfIn PDF document text
    • https://xemavuvewo.weebly.com/uploads/1/3/5/3/135394060/2885999.pdfIn PDF document text
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/dazejobemixisixivono.pdfIn PDF document text
    • https://cdn.sqhk.co/nisavivurefu/CQhbjh0/treatment_guidelines_for_hypertensive_emergency.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwojosop/tiejdY5/98629620036.pdfIn PDF document text
    • http://sorebifisawug.22web.org/roseville_college_second_hand_uniform.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/fajixe/el_amor_en_tiempos_de_colera_espaol.pdfIn PDF document text
    • https://0a179c54-d52e-4a91-8b03-cd4d741ea076.filesusr.com/ugd/205ae4_c8442d7a64ad4e66a95887c0fa3c1a53.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuzakob/benin_music_site.pdfIn PDF document text
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_8b7de725d7c94d75aa4b7049353a39d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/ac_market_app_free_for_pc.pdfIn PDF document text
    • https://992bddda-184d-467f-a815-0165b41a2208.filesusr.com/ugd/69695d_421e6bcbcb0740b19542e2e42bb2a3f1.pdf?index=trueIn PDF document text
    • http://vonupov.epizy.com/tezujawogikafek.pdfIn PDF document text
    • https://47e4df30-8702-49a4-8bd5-327e1546ff06.filesusr.com/ugd/379272_db228656139d4f2d9214db95d70e5e5e.pdf?index=trueIn PDF document text
    • https://5f90d536-2a72-4461-adff-280afd3056cb.filesusr.com/ugd/27c394_b628db67c3414ee4a8b3b7d46d65acdd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wixatax/miniclip_8_ball_pool_multiplayer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/manual_brastemp_inverse_bre57.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE087 5772 bytes
SHA-256: 0a4e16d82bf7afb4001c084887990de0639f17dff013a067e5bfca13a80f668a
font_01_sfnt_off0000f441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF441 11056 bytes
SHA-256: 597ecdd98143a73a3b1d2e7f0174d24eb7ba7a9411540c3a1b49bc598c7fa5af

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