Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ea9ddce7c5fa03…

MALICIOUS

PDF

43.1 KB Created: 2020-07-27 08:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 816e4736b23717810ce71075637b4195 SHA-1: 6c9d4ed5c22471820d92ba7e152613ef93ed73f7 SHA-256: c1ea9ddce7c5fa032128eea78bbd09faea4c21b139bde87fe6cac916576438dc
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One prominent URL, 'https://ttraff.ru/pify?keyword=application+letter+sample+in+nigeria+pdf', is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Application letter sample in nigeria pdf'. The presence of a malicious redirector link and the link farm structure strongly indicate a phishing or malicious redirection attempt.

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.ru/pify?keyword=application+letter+sample+in+nigeria+pdf In PDF document text
    • http://files.navigatingbeinghumantherapy.com/uploads/1/3/0/8/130813592/2356795.pdfIn PDF document text
    • http://files.jkenwellstewart.com/uploads/1/3/1/3/131383934/fasazukidokubu-kalub-torasanawonorum-zotafanolajewe.pdfIn PDF document text
    • http://files.lazarushandplane.com/uploads/1/3/0/7/130739268/notomepofebak.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/1/0428/0870/5187/files/24850081054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5269/4680/files/wuzaligomiparujowit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/29391153142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/83160999932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/98178917669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/xalufuwibatas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/70964431243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/43201717574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/11149497500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/58860668524.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_off00006ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 5252 bytes
SHA-256: 09174f07a2bf0f019797323e655773dbeeb41dacd41290215689573ec69fe186
font_01_sfnt_off00007c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 10352 bytes
SHA-256: 0833879507d05481907777fe628b2daa5c74b23d68f0fb832fd4e7481a57b58f

Open this report in the interactive analyzer, or submit your own file for analysis.