Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9aa6a0da0e782f5…

MALICIOUS

PDF

48.9 KB Created: 2020-07-28 22:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02890001128f28e218c59538ccff2265 SHA-1: d90e928cdeb3d3f97a244fbd464d5c259fcd95fc SHA-256: b9aa6a0da0e782f5c1936a3767cea86d6c448b3d3c48c7d79b6d4f8a6695decc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a strong likelihood of malicious intent, aiming to lure users to external sites. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the sheer volume of links suggests a distribution or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://ttraff.ru/pify?keyword=weather+report+in+tamil+nadu+red+alert In PDF document text
    • http://files.rimrockmanagement.biz/uploads/1/3/1/4/131482975/zazatipu.pdfIn PDF document text
    • http://files.crystaldull.com/uploads/1/3/2/6/132683140/kixuluju-safexetelale-noxefoxa.pdfIn PDF document text
    • http://files.doulaplus.com/uploads/1/3/1/1/131164275/1655283.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/jakoxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7134/files/kazitolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/xefutebisijipati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/pufoluzapamejaluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/5070953956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/24748803182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/5148397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52209678420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/33626727111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/fuvokob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/zanulezelapabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/pebadugaxikovilaposilif.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_off00008379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8379 4916 bytes
SHA-256: bb15bb40583fc21ee8fb52b8a6f3b5a78fded654306945ef2503c1926573c4b2
font_01_sfnt_off00009402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9402 9912 bytes
SHA-256: 2d2b0deedd13c80af390eff7d8d460419dbed4f3567bb1ea51ed4321078bbca8

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