Malicious PDF — malware analysis report

Static analysis result for SHA-256 1238496e5341046f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-03 21:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37caadbc06b07898fa9a0a423ffde4f2 SHA-1: 25def95d4df5ad953ff425dd5955641e83fa29b0 SHA-256: 1238496e5341046f2e8d5aafd084aabe9fb96f29a6e4f97ada48ed638e8c0055
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure for a 'free download'. The presence of multiple external PDF links suggests an attempt to create a link farm for SEO manipulation, likely to host phishing content.

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=tatalaksana+bronkiektasis+pdf In PDF document text
    • http://files.mikecurtisfootball.com/uploads/1/3/2/8/132815367/zapitibol.pdfIn PDF document text
    • http://gotixuwe.prestigesupport.org/uploads/1/3/0/7/130775219/zovew.pdfIn PDF document text
    • http://files.tortoise.com/uploads/1/3/1/1/131163914/8451818.pdfIn PDF document text
    • http://files.bbcsalberta.com/uploads/1/3/1/6/131637419/49231.pdfIn PDF document text
    • http://files.thebayshorecondos.com/uploads/1/3/2/8/132814930/pigusuvewajarikam.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/1/0435/9038/5821/files/pack_simulator_fifa_16.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/55479412065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/gojewefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/21039970689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/63945525946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/34565296067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/husky_20_gallon_air_compressor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/gupej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/85959702358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/bolirukixogusejiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5025/3992/files/masuxowej.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_off00006f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F35 5188 bytes
SHA-256: b09c26c8f9081ec990db03dfa173aeb8d7eff3668b8f0021906c4bd36fe123d5
font_01_sfnt_off000080de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DE 10324 bytes
SHA-256: ca4851b260f39d2d27c7df1cbcfffbaefefb520d0dfb77f8e3575707cdd58929

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