Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5a735cab90861a…

MALICIOUS

PDF

37.1 KB Created: 2020-08-23 04:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2011511763447c36d03a52135db9a715 SHA-1: d6688bf42d2810f4ddc90f7f8e31697c9d71d181 SHA-256: 3d5a735cab90861a08aa8c12963bb70d0fda9f1db55e9ef8f4c4de08b98b4a67
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as search results, with the primary malicious link being https://ttraff.com/pify?keyword=hollywood+animation+movie++in+300mb. This link likely redirects to a malicious site or download. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains multiple embedded URLs pointing to external resources, some of which are benign but others are unknown or malicious.

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=hollywood+animation+movie++in+300mb In PDF document text
    • http://files.briannecmartin.com/uploads/1/3/0/7/130739153/410f6cbdd1b.pdfIn PDF document text
    • http://files.piperfayephotography.com/uploads/1/3/1/4/131453904/wasilifuta.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/1/0427/4431/6070/files/pefumofogen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/5983/2982/files/alta_via_2_dolomiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/12346795131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/zasofevuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/avatar_the_last_airbender_french_dub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/jonubesovijopurazafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/zoterawubasarekujupijul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/82517939561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/58270990390.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000540c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540C 5360 bytes
SHA-256: 9b3aa239815f636c82f33d75b7d171477708950fe2e89d9f0a38b92f3d47efd2
font_01_sfnt_off00006652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6652 10008 bytes
SHA-256: a1f614fa00f086b1ca5ac0bdf4453e6c7742152578f486a4dd5c897e5ee4d247

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