Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bed2c414d030900…

MALICIOUS

PDF

39.7 KB Created: 2020-08-04 21:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d4b5d5ae0435f4f6862a1fd9ed45205 SHA-1: 0081c9d87eae2df67ff695fdf171eefe2f39d46d SHA-256: 4bed2c414d0309001d208933b52293386948efa07b24cbace65b3e99f0842270
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, https://ttraff.ru/pify?keyword=php+programming+clever+techie+pdf, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be malformed or contains obfuscated text, but the presence of the link farm and the malicious redirector strongly suggest an attempt to lure users to malicious 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=php+programming+clever+techie+pdf In PDF document text
    • http://files.jskarchitect.com/uploads/1/3/0/7/130776490/bopabulepedur-fezuzi-raxewuwis.pdfIn PDF document text
    • http://files.kimicarter.com/uploads/1/3/1/3/131379343/nemavemowovupen.pdfIn PDF document text
    • http://files.anglesborons.com/uploads/1/3/0/7/130738943/zugupufukusebudemowa.pdfIn PDF document text
    • http://files.butterfliesandbumblebeesdaycare.com/uploads/1/3/0/8/130873922/2d9f5.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/1/0431/2770/1655/files/lawiroviwuzojomuvuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/23388393974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/difazunenulifuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/99641963240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3763/files/guxuzot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/fipekeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/51600084513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/36296445318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/xomuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/siwowopiraboxisikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/palejofuferodewovurut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/16645518900.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_off00005d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 5452 bytes
SHA-256: 8389d9b1a0c6d65f32770ecb44dc5d7be3b806bf1541ce062c69752bca28ba48
font_01_sfnt_off00007004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 9948 bytes
SHA-256: 8bd08c0f6ec59c5ec908b65e1f376b9ff2da76e742f6e1dd9381e3ca5d9d14c2

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