Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a102c0687ea0c23…

MALICIOUS

PDF

39.5 KB Created: 2020-08-24 03:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8f763098f80d982fa542562de950c20 SHA-1: f0ecc253f62e4b3769c44dcbf901392b9de685dd SHA-256: 1a102c0687ea0c23efadae09b06950a3db814ee18457156da850587cedb5789c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but includes the target URL, suggesting an attempt to disguise malicious content as legitimate information.

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=anand+sahib+paath+in+punjabi+pdf In PDF document text
    • http://files.silverfoxpottery.com/uploads/1/3/1/4/131454523/8ce8ea1.pdfIn PDF document text
    • http://rebizu.knockouthumor.com/uploads/1/3/0/7/130775593/jilexovebesod-nakobip-gusuvu.pdfIn PDF document text
    • http://files.thehulses.com/uploads/1/3/1/8/131871687/negudo-xapifiw.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/1/0431/7977/0019/files/84266678022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/manualidades_navidea_cd_reciclados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7058/4987/files/92465800685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/logan_lathe_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/jomojop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6927/5286/files/66447312409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2049/9616/files/uitzending_formule_1_cafe_bijwonen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/calefont_ionizado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6759/5169/files/9720763060.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 5

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_off00005f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F69 5208 bytes
SHA-256: 97039e0b2fca1c3cdadcffcb0c9b99497daed4288ad26fe93362ca2a0a5cedb6
font_01_sfnt_off00007118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7118 9448 bytes
SHA-256: 1aa683683b9fcf5029bd5e1b096f9dfe0f06d52c10b134af1b4379be2cfb779f

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