Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3e48ec032524a9…

MALICIOUS

PDF

43.1 KB Created: 2020-08-12 07:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b9141281a70cc8d803f263aad14d612 SHA-1: 591b84491b933cd41d29ca7baa7e3aeed1d90193 SHA-256: cd3e48ec032524a9b68dbead1c44d8a93aea4dcd206f634f2dfe021f0fff21a4
194 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding a large number of external links. The primary malicious indicator is the presence of a link to a known redirector service, 'ttraff.cc', which likely serves to obscure the ultimate destination of the malicious payload. The ML classifier strongly supports the malicious nature of this PDF. 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=normes+comptables+aaoifi+pdf In PDF document text
    • http://files.westmountwildrugby.com/uploads/1/3/0/7/130740323/89f42d093.pdfIn PDF document text
    • http://files.infantmassagenewzealand.org/uploads/1/3/1/3/131379439/9960799.pdfIn PDF document text
    • http://files.cbbankevents.com/uploads/1/3/1/4/131408172/bupelakok_tixim_fifatitorezu.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/1/0430/7750/1095/files/96090118666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/basozowolunimubezuwabowab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/7th_grade_civil_servant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/carpal_tunnel_syndrome_exercises_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/wujezidoripo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/36772955597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/ganaxotizigaresovinate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/luwowijole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/92788439369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/nubexetejekibuberijosuluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/menijuleradozi.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_off00006540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6540 5412 bytes
SHA-256: 013a6be6895a19c42c641801918f5b6c05d8276664c9532100b9f3e031db21f6
font_01_sfnt_off0000778a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778A 12224 bytes
SHA-256: dd9391e2897a6ae7957f24bc927564e3c06d4d4dcc86c69726e164efa581ee68

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