Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8ba2cdc7d91a7f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 06:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24030980604c10528de08dd3a6d65e5a SHA-1: 63343a9eefc3365a9f559ac54edc04a2b5693b75 SHA-256: ca8ba2cdc7d91a7f4e4e06a6ea2fb4505a70887cd6874efd886a60f02eb0c735
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.com. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body contains the URL that triggered the malicious redirector heuristic.

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=pneumatic+conveyor+system+pdf In PDF document text
    • http://files.tayloredtoyouevents.com/uploads/1/3/2/6/132681992/gasurarewi_kofevepopunugiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/bulodesebikojikexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/86586800416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/xaxikotowelabovot.pdfIn PDF document text
    • http://zumato.yazan.people.ua.edu/uploads/1/3/1/6/131636755/8069456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/nitarifax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4279/7730/files/rowenta_irons_repair.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6916/9054/files/bauer_bodoni_condensed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5269/3669/files/40346117120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/24571242474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/cbse_class_12_2020_question_papers.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 1

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_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 5312 bytes
SHA-256: dfd92ed0b8c6a54b71fb5780c35810aae60eefc1a6ad23d96bbbc0a0b8724ee9
font_01_sfnt_off000072ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EE 10596 bytes
SHA-256: 6dde078d478f19c0f6dfea1e163e619eeb05036980528676cb47992e2ec4888a
font_02_sfnt_off00009669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9669 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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