Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d84d4f169e755ae…

MALICIOUS

PDF

81.2 KB Created: 2020-12-28 17:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99cba8d6d5207cbeb325e25900013ffb SHA-1: d1a80d4f23b971fb8a528a45d5af3e4fdba2625b SHA-256: 1d84d4f169e755ae4df02fb6505f29ba4bdf254420ab7ae6324d865b5ef6df8d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it is a malicious redirector link and an advance-fee scam lure. The embedded URL, https://gettraff.ru/strik?utm_term=lucky+draw+bingo+on+richland+hills, is flagged as a known malicious redirector. The document body, though partially corrupted, contains text related to a 'lucky draw bingo' which aligns with the advance-fee scam heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://gettraff.ru/strik?utm_term=lucky+draw+bingo+on+richland+hills
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5fc601c91c859.pdf
    • https://cdn-cms.f-static.net/uploads/4455180/normal_5fb52cf96465a.pdf
    • https://cdn-cms.f-static.net/uploads/4476756/normal_5fbe8d5a2879d.pdf
    • https://gisoroweri.weebly.com/uploads/1/3/4/8/134893792/tabed-jozogudaj-monalis.pdf
    • https://cdn-cms.f-static.net/uploads/4424630/normal_5f9d915faa17a.pdf
    • https://cdn.sqhk.co/xipugonor/7hcijia/93294549667.pdf
    • https://cdn.sqhk.co/pidefatop/Igg5hgk/alien_resurrection_director_s_cut_runtime.pdf
    • https://cdn.sqhk.co/fedelubu/8yhdTgg/juzaposifexadijes.pdf
    • https://rugazodexozapef.weebly.com/uploads/1/3/4/4/134480570/2425231.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mojivikapeti/zupesigipobojif.pdf
    • https://s3.amazonaws.com/wegugus/hyderabadi_bakra_movie_comedy_scenes.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_off0000fea1.bin
1a43e5e91d35510e2d67894af765fade070278f435ce0a0e600c34d62a60a2d5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA1 5540 bytes
font_01_sfnt_off00011191.bin
75a39fee7ab31d5c9ba2723c34ae0e26ee88d7f769fb82bda91768371c66e49b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11191 11192 bytes