Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cef511c3a58f653…

MALICIOUS

PDF

46.4 KB Created: 2020-08-17 09:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41e02ee8e76f08d93a4640c3c1e2be31 SHA-1: ae851fc6fd73cea53a5f7dd11184c82f614d68d6 SHA-256: 1cef511c3a58f653e1ec1882532429474962cfef55ce9f622254c5a8b7a36b9c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link `https://ttraff.cc/pify?keyword=format+y+axis+in+excel` leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links, many hosted on `cdn.shopify.com`, which are likely part of a link farm to manipulate search engine results or distribute malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=format+y+axis+in+excel In PDF document text
    • http://files.bethelumcsi.com/uploads/1/3/1/0/131071256/buzejanavazewe.pdfIn PDF document text
    • http://files.kisband.org/uploads/1/3/2/6/132681351/moregoxatamelad.pdfIn PDF document text
    • http://files.birminghamwalkingtours.co.uk/uploads/1/3/2/7/132740873/0e29ab8316b183c.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/1/0431/1855/9389/files/64445756050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/88676854527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1303/5416/files/lofixaloni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/halo_effect_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/responsive_media_queries_for_all_devices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/zaditewaxutununo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7682/6789/files/gradient_boosting_algorithm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/71057403907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/how_do_you_calculate_isoelectric_point.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_off00007995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7995 5072 bytes
SHA-256: a39d7207a9193ae983cf331e04149ed209f265945bf043ddea8ed0288d057939
font_01_sfnt_off00008ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC9 10060 bytes
SHA-256: 01d5d458e281cd61abbd95351edc89ed98cdfed35fbab673ddbd32eb74d37f9b

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