Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1c482dde1648fc…

MALICIOUS

PDF

39.8 KB Created: 2020-08-09 11:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 894057c074dbec09c9cc958c23f4e834 SHA-1: 62efe00f23e72869d2cd12fc7ec1b282540e126f SHA-256: 1f1c482dde1648fcabb94e4fcab317f6c0d80ca51de5794a87b60afa48a6f666
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 redirect users to malicious websites. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), and another flagged a 'link farm' of external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'agribusiness management' and the URL that triggered the malicious redirector heuristic, suggesting a lure to trick users into clicking on potentially harmful 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=introduction+to+agribusiness+management+pdf In PDF document text
    • http://files.catcatblog.com/uploads/1/3/1/4/131452878/129315c.pdfIn PDF document text
    • http://sovuwu.obriennewsservice.com/uploads/1/3/2/8/132814930/1764786.pdfIn PDF document text
    • http://befiretum.learningislifelong.us/uploads/1/3/1/4/131452883/5011038.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/1/0432/7620/6235/files/peletokixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/30_days_abs_challenge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/jekif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/rafaxeradum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/vipafasezubatiwat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/fulimikipanoxilafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/free_printable_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/92309458761.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 7

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_off00005c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4A 5520 bytes
SHA-256: b231315ce27fd9a52c9775b53cff3f44978978d0b6af3e5a20b0d1cc9655fdee
font_01_sfnt_off00006eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EED 10356 bytes
SHA-256: 5f310ae2f403381165015546988bb4363430cbd3512b1f456b75c976e1739c5a

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