Malicious PDF — malware analysis report

Static analysis result for SHA-256 1619ff70bb1661e3…

MALICIOUS

PDF

39.4 KB Created: 2020-08-08 16:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d66b0de3f83fb30f3f5b86d099269bc SHA-1: d278af2125817412b0337c359bc6404036f168cc SHA-256: 1619ff70bb1661e3b460dc6ac6e47588a30cd0563bb730aeec5aabe63f14ee0c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service designed to obscure the final malicious destination. The primary lure, "Bizerba slicer parts pdf", leads to a redirector at `https://ttraff.ru/pify?keyword=bizerba+slicer+parts+pdf`, which is flagged as malicious. This suggests a phishing or scam campaign aiming to redirect users to potentially harmful content.

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=bizerba+slicer+parts+pdf In PDF document text
    • http://valipotak.gotnlc.com/uploads/1/3/1/4/131437987/4638adf5.pdfIn PDF document text
    • http://files.thefilamentstudio.com/uploads/1/3/0/7/130739769/wapuwivegub.pdfIn PDF document text
    • http://baxiluw.engagementlearningpress.com/uploads/1/3/1/3/131383297/28fb051.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/1/0433/7205/2643/files/postgresql_command_line_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/jasokevajebuviwodixemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8991/0165/files/19326247898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/articulos_sobre_cancer_de_prostata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/mekege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0323/9835/files/viwufedabepijukefuruke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/vabunerapuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/powelomijujozomakediza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/futewekevunobikesonojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/74888874760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/19175698670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/lionel_zw_transformer_repair.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/faxetapibifetixoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/nature_and_scope_of_business_finance.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_off0000514f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514F 5388 bytes
SHA-256: 38bbd420562910276ad33a759f3be0ae37b716da81aa10a3916187b2f10c9f85
font_01_sfnt_off000063b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B5 13580 bytes
SHA-256: 7941020767bf6b89e2607a8fab3091ed434de4ec2873797d8e828fac7a049fcb

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