Malicious PDF — malware analysis report

Static analysis result for SHA-256 a258ee2cc4ac3b51…

MALICIOUS

PDF

66.9 KB Created: 2020-11-10 11:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 138687fe3bfc0b58a4bfd8dd6ba6534b SHA-1: 938577f50b7c70e417b4f05a78b0b259816086dd SHA-256: a258ee2cc4ac3b51d44f735cff393ec49e04a0615d85566cc09f0728aa124e6b
194 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/aws?keyword=public+law+97-280+oct+4+1982, is likely used to redirect the user to a phishing site. No scripts were extracted from this sample, but the presence of malicious links and the ML classifier output strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/aws?keyword=public+law+97-280+oct+4+1982 In PDF document text
    • https://zunuduzeguw.weebly.com/uploads/1/3/4/3/134344012/zuwabu.pdfIn PDF document text
    • https://tajuweselu.weebly.com/uploads/1/3/4/3/134362517/f14cd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f8e240cf0a26.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/kaxodepuxuzasivufir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411915/normal_5f94a7af71e83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_5fa1ccacd552f.pdfIn PDF document text
    • https://geroguvipem.weebly.com/uploads/1/3/4/4/134465684/zokufuvesulovexeton.pdfIn PDF document text
    • https://zagukosi.weebly.com/uploads/1/3/4/3/134314994/meteb-kubapu-gewudesore-wilonobigamasat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e33f4b-c836-4c99-a76c-bb8d7d5c586e/89993416497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eecad40-ee34-4c4c-94bb-12f141e041dc/99646289169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e43af70-0723-4c6a-ab8c-d622d3689f65/52661504883.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_off0000c90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90B 5628 bytes
SHA-256: 3afd4c6b5070cdf9d123f61b544453cb2b9d45ffd59e43d40a0fd17a97defb1c
font_01_sfnt_off0000dc78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC78 10136 bytes
SHA-256: 77959e301f495ce1f33307880b2a6af2ebcdf46dcc19b4103b9c4528d40a8da5