Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfd8cb994370871…

MALICIOUS

PDF

39.4 KB Created: 2020-08-04 03:35:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5e3bd884effb0272a6a566df42396fc SHA-1: 699b0826cb5473b189e5c5d5db8488979d7e026a SHA-256: 7bfd8cb99437087177e2bd8a4b74c924cee8451697521afaf69be966dbfdc592
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking Shopify URL, suggesting a lure for users to download further content. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL is a high-confidence indicator of malicious intent.

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=5+stages+grief+pdf In PDF document text
    • http://files.beautykittytrainingacademy.com/uploads/1/3/1/3/131380308/wuruwumugilo.pdfIn PDF document text
    • http://files.our-perspective.com/uploads/1/3/0/8/130814101/3631544.pdfIn PDF document text
    • http://files.meilensteinwein.ch/uploads/1/3/0/7/130775537/3114971.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/1/0429/5481/7690/files/forimiximezalisepok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53635556436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/47280169771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/kapirexisupitudajorawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/dutij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/72783110845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/tafoxojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/39360715429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/automotive_mechanics_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/77132524120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/wuzibopubonu.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 7

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_off00005deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEB 5204 bytes
SHA-256: cf0c113dec3ea1e5b1c1bd14a01d0d0ef68dbc1ede987ce562eab7599053672e
font_01_sfnt_off00006fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 9852 bytes
SHA-256: da96a10f177a3635d1efbf9c5f2e70a9b06f3fa1d5612c2d51abddc1f0454d43

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