Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7963b8dda9ab11f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-14 12:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b42e639fbf1ca81c4ff4abbe66664d71 SHA-1: e9d55aef597da7a81fb1e5a4a1445ea2bdad9031 SHA-256: d7963b8dda9ab11f7866e0b98ce5c197446e868ba8f0000d90d5219728715a22
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=twist+of+fate+season+2+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on cdn.shopify.com, likely to improve search engine ranking and lure unsuspecting users. The ML classifier also 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.com/pify?keyword=twist+of+fate+season+2+free In PDF document text
    • http://files.jess-cbd.com/uploads/1/3/1/4/131483143/680103.pdfIn PDF document text
    • http://dodib.gocprny.com/uploads/1/3/0/9/130969762/wabewoxobid.pdfIn PDF document text
    • http://files.screamingalley.co.uk/uploads/1/3/0/7/130739654/juninifo-rilodowa-josoxufevesep-vifegadas.pdfIn PDF document text
    • http://files.esaetapi.org/uploads/1/3/1/4/131453109/wikovuxanujezo-nerufasinifazew-gaxiwaw-kajawevafuzax.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/1/0429/2473/6678/files/sidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/31695858694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/algorithmic_game_theory_cambridge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/mokimagexabapufuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7873/7302/files/possessive_pronoun_exercise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9348/1889/files/58317434232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/84861321655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/14090450106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/plan_y_programa_aprendizajes_clave_primaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/atticus_poem_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zixetirubopejama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/hansel_and_gretel_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/tuguxibunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/vexuterovufogefa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6526 4904 bytes
SHA-256: ff8ef2f9e6304b32674b11191b7d8a39f6b49dd072699ed312c5958ab680d584
font_01_sfnt_off000075f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 9428 bytes
SHA-256: bb2a3ebcfb17c9b6154826b11d8dafc302c4c3177e3cb7db4607e0733ab391e1