Malicious PDF — malware analysis report

Static analysis result for SHA-256 990d7b56d986747e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-09 16:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a76b066962d09d071300bfe154367a8b SHA-1: 419c39d5aa65c2f579689feb189852b3e5d46ea3 SHA-256: 990d7b56d986747e62ad3d38883d88fd18135aab7d7f0db2c2589c981d9f8cef
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to Shopify domains, likely intended to manipulate search engine results or lure users. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector and link farm strongly suggests a phishing or SEO poisoning attack pattern.

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=austin+kleon+show+your+work+pdf+download In PDF document text
    • http://files.approachapparel.com/uploads/1/3/1/3/131383664/8009279.pdfIn PDF document text
    • http://lasexili.1beautifulyou.com/uploads/1/3/2/7/132741555/400ecbd5d67cea.pdfIn PDF document text
    • http://files.graceandgloryyoga.com/uploads/1/3/1/4/131483148/tonuvefezux_nilotixa_fonivarifixa_kedegijogedif.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/1/0429/2293/4435/files/96546590537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/tosexiderux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/fipetipafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5264/files/79047111448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/91140702490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bevenekoxedaluxozizup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/gegulamamawanudakijaleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/nitobusewiwutugub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/java_circular_buffer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/71172461148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7554/files/73074829553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/88162253572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3188/6998/files/nujadigibapenumafanelaka.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_off00005c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0C 5376 bytes
SHA-256: b5eb823df8259169fe03917f011470862f1bde230e3a07052e47e5cdd20924d4
font_01_sfnt_off00006e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6A 10004 bytes
SHA-256: cf73a0610dc82549041a03f3e514178258315bd7d6d0e0a0ed60dacfa0965022

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