Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f912fe94ca101d8…

MALICIOUS

PDF

37.0 KB Created: 2020-08-20 13:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: face58596332f49f2a56bdb34492e03f SHA-1: 38549d08a8b9884d77b0ce18281cde40e8101ecb SHA-256: 7f912fe94ca101d88e7f06ff1a9aa55c25ce37d23261ee219cea21bc03b22a53
194 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to a malicious redirector URL (https://ttraff.ru/pify?keyword=ubuntu+16.+04+32+bit+iso+image) disguised as a software download lure. The document contains numerous links to other PDFs hosted on Shopify, likely to improve search engine ranking and distribute the malicious payload. The ML classifier strongly indicated maliciousness.

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=ubuntu+16.+04+32+bit+iso+image In PDF document text
    • http://files.ohtheplacestogo.com/uploads/1/3/1/3/131383613/leselimam_sowuwu_ginexa.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/1/0432/7312/6052/files/taxivukewutisipotujudim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/rorimixuxanovekoguzese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0376/5158/files/25233343498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7564/9187/files/bitdefender_antivirus_plus_2017_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/50744431740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/vajinowawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/print_webpage_to_firefox_addon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/66025177659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/34839272943.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 1

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_off00005292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5292 5772 bytes
SHA-256: 55aeb0decb0be4d3b483b587357b826a192aaa5d466bedf81902613d7f4ece65
font_01_sfnt_off0000663d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663D 9780 bytes
SHA-256: 74292321a2670729795044e97dcc2880a04ddf043c5953adb899d8df99703586

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