Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab0a83672eb99ee…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 17:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d00411dac18c0db8b2684abb4f063d8 SHA-1: b785d791de9a432b145a9471bd6311b55d4ebbbf SHA-256: 9ab0a83672eb99ee91d37b50fcedac799e00bd63037b57e838973fb303a82722
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a large number of external links. One of these links points to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious traffic. The document body contains garbled text but also includes the malicious URL and several Shopify-hosted PDF links, suggesting a link farm or redirection strategy.

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=berthold+city+bold+font In PDF document text
    • http://files.wokingminiaturerailwaysociety.com/uploads/1/3/1/6/131606111/xavigubifimenew-nikibowujatur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/5354167237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/30518730821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/32622821574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/anatomia_topografica_de_cabeza_y_cuello.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/duzixerazomovirosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/39974826643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/fotogiralugebunulubakuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8074/files/mokexemunefatatamelalikoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1465/8980/files/37881698941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/semigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/mantenimiento_de_elevadores_de_cangilones.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000427e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x427E 5012 bytes
SHA-256: a0b5f0463360c0dc79ba7d31defce05b848c8bdcee9eafa158c88ba6b564b51e
font_01_sfnt_off00005381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5381 8232 bytes
SHA-256: 40492ffb4da5bc4af5c76ccc8812b1f230467a3a9ea24ae79e460374057a9ea3
font_02_sfnt_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 9876 bytes
SHA-256: e60d686c9277e3ae81b5e02241eb2fb30353266f998174d94a246cf2ce5701ae

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