Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbe71618621fb9c…

MALICIOUS

PDF

46.7 KB Created: 2020-08-02 14:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c42212a00231f6d46abb8ca22a0efe6a SHA-1: 30c62e83f59fb31720b6004650f7a41b522af236 SHA-256: 4dbe71618621fb9c6d781d07cc550b3e9725a872772e7c0063bb4b73e7d37c6c
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 pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious nature of this PDF.

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=the+accidental+tourist+pdf In PDF document text
    • http://files.fromthebottom2thetop.com/uploads/1/3/2/7/132710780/miwevuvokebis.pdfIn PDF document text
    • http://files.wooddynamics.net/uploads/1/3/2/8/132814906/benanuga.pdfIn PDF document text
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdfIn PDF document text
    • http://files.srinagarhotel.net/uploads/1/3/1/4/131483275/nediwoterobaxukizak.pdfIn PDF document text
    • http://files.carolinefreudenthal.com/uploads/1/3/1/6/131637374/pogetiwenufif-fikasorerezulal-rifubiwuvapufi-tuliretejozibux.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/1/0432/2390/8520/files/76401416363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/bipisifurovowuragu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sixapuxinisoponexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/litivafaveragisifikute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/60140835134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/83815082915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/poduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/savemefip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/wuzekosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3851/5095/files/fiwanivogukerimilitelur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/88095761659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/livosamuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/37220107556.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_off00006c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 5192 bytes
SHA-256: 351161ad198f3986d9054139862ee9f351d8e57a971e6ed0528cce44225f823a
font_01_sfnt_off00007de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 14840 bytes
SHA-256: 7232a016ba90321945c360714188220c78425898f3381b94da94e995e1f65c16

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