Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b68d5d6c82c86ce…

MALICIOUS

PDF

53.7 KB Created: 2020-07-28 22:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ee5f039c0f100f05d9ef2307f978bc6 SHA-1: ff73c1a1f45661020dc82b20134b6d9259c4e523 SHA-256: 4b68d5d6c82c86ce20773a014d38a1c99cbdd1119a4b9189092380720742dc6d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, specifically linking to a redirector and a large number of external PDF links, suggesting a link farm or SEO abuse for traffic generation. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The document body, though heavily obfuscated, contains text related to citation formats, likely a lure to disguise the malicious links.

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=internal+citation+mla+format+website In PDF document text
    • http://files.rltennis.ca/uploads/1/3/1/4/131437669/xemejexanutaj.pdfIn PDF document text
    • http://files.isivirginia.com/uploads/1/3/0/7/130738741/2670979.pdfIn PDF document text
    • http://files.wildcoyotefarm.com/uploads/1/3/0/7/130739662/410985831ee9c07.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/1/0437/4865/5265/files/magipuluxupaziwokomaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/sakafifojivapusado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/15829951744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/rixilozigitojis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/739980993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/vutavojizexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/79355141347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8187/6131/files/suxajejub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/4998012583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7620/files/ralumenirare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/neledizesapid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mukevosegimudakes.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 3

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_off00009737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9737 4984 bytes
SHA-256: c302744bb3508fc4772067a6c66a14cabb99ddbda0a6166c0b0cd06c57e57dc5
font_01_sfnt_off0000a80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA80A 9880 bytes
SHA-256: 30225cc7561e9012a66d2186ab91f5817e3698521e0f1c61d76ab00a68dcd55d

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