Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a41bf3368acfca5…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 11:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffb260b6fbbd20969c6768ef70d40a23 SHA-1: 189dd69ea86a732b7597663d29108a9a7a89c171 SHA-256: 0a41bf3368acfca59186156cf3fd32477e5968cb0605327df6a6aee5986177e8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and benign-looking Shopify URLs, suggesting a lure for free downloads. The ML classifier also strongly indicated maliciousness.

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=ggplot+stacked+bar In PDF document text
    • http://files.dropintoinfinity.com/uploads/1/3/2/8/132814071/woxakejor.pdfIn PDF document text
    • http://files.dtlaclean.com/uploads/1/3/0/7/130776481/5b3a602f11.pdfIn PDF document text
    • http://files.shantellstricklanddavis.com/uploads/1/3/1/4/131437680/69bfafdb0a4ea10.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/1/0435/3107/5743/files/brew_install_java_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/lewufiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1057/2966/files/12489186867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2680/files/dejuwam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/1867315448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/kofujizak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/25410997099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/20578457288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/25249370861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1605/1109/files/rerowixidosileselofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/takikabuj.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_off00005cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 5476 bytes
SHA-256: 25bad9cc2153e4edd5ca65bd8dcde53d2c039501e595760c958c4fe58f060eb0
font_01_sfnt_off00006f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F88 14176 bytes
SHA-256: 696f466af22315cc0addee87f0fa36733d7ea1abf4dd217f3bf379a81a5dab2c

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