Malicious PDF — malware analysis report

Static analysis result for SHA-256 163edc6765bad037…

MALICIOUS

PDF

45.5 KB Created: 2020-07-30 16:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58d6daefb360a85986b843a50513e964 SHA-1: 20b3dd261cb4ab240bf84fadf83471090ce12bcf SHA-256: 163edc6765bad03799c878be6dab014a02660ce58a0ef6ca6e22c5d9aff6784f
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract traffic. The primary redirector URL, https://ttraff.ru/pify?keyword=free+motorcycle+frame+jig+plans+pdf, is flagged as malicious. While no scripts were extracted, the structure and heuristic firings strongly suggest a malicious redirector used for phishing or scamming purposes.

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=free+motorcycle+frame+jig+plans+pdf In PDF document text
    • http://files.sabrinaievans.com/uploads/1/3/1/4/131437246/gegoxixa.pdfIn PDF document text
    • http://files.annkellettghostwriting.com/uploads/1/3/1/1/131163643/e840ad5a0bf396.pdfIn PDF document text
    • http://files.amydethick.com.au/uploads/1/3/0/7/130775260/9a654869700c92.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/1/0438/2153/1293/files/25205267132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/linapiwiwolodizuwesaxozuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/18773445783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5805/2763/files/63029436989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/43106291823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/68237109335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/90173221073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/86005380241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/zomemekuropisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/xagamefavuvinifumatakidup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/pofozatisilakapifaxukizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/wosaxude.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 4

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_off00007381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7381 5396 bytes
SHA-256: a7c7a4d3a3af9dbb3beddb74d8fe959cd1f702d2b13f66f40036d17965bc28d8
font_01_sfnt_off000085d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D2 10328 bytes
SHA-256: 19ceeb4d4220a9ba81128c824aca3f0f092bd7a7e6600ce0e48a7bdc004e965d

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