Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce890ab7c5a3ea37…

MALICIOUS

PDF

42.6 KB Created: 2020-08-13 17:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 680976944d7bc3786fa5df3e1da15753 SHA-1: a67f22ae7ad5059c2f2c1768df8ae509423aef92 SHA-256: ce890ab7c5a3ea370f20826ffd89ced230569f444306667cece05c2aeb2b1156
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. This indicates a likely attempt to direct users to malicious sites. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL is a strong indicator of malicious intent.

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/wb?keyword=defining%20contemporary%20art%20pdf In PDF document text
    • http://files.sarahruthless.com/uploads/1/3/2/7/132740371/5910670.pdfIn PDF document text
    • http://nenim.jeremydhoward.com/uploads/1/3/0/8/130814328/8142664.pdfIn PDF document text
    • http://files.mcadoos.ca/uploads/1/3/1/4/131455463/80e2b45281.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/1/0433/2650/5118/files/lonuwojutudaminib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3812/9823/files/mupoturu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/40480926408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/76356939711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1466/7936/files/zetagarigido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/8782729034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/nekonudotuvurabovuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/54273232277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/social_problems_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/wakab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/47934476546.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 6

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_off000064fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FD 5364 bytes
SHA-256: 95a802e6452eb9d6df079be2e582614de0ee5c3131e215988bc4c91e97f95f94
font_01_sfnt_off0000772d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772D 11332 bytes
SHA-256: 22a2c1ab11f3ba75d7b358783a67eabbbfde91b041298188f6c59023939c02b8

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