Malicious PDF — malware analysis report

Static analysis result for SHA-256 8216fb1b40d5c3b3…

MALICIOUS

PDF

40.5 KB Created: 2020-08-21 16:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b566b57cc34d218948b5bdd2afa472b0 SHA-1: 744754889455b55df91492bfbafe0bf582668bf6 SHA-256: 8216fb1b40d5c3b37e83269ab82394e8ce26344c8df59eddaaa082917f5dacbe
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 text related to 'Michael Kors shoes size guide' and the authoring application 'wkhtmltopdf', suggesting a phishing or scam lure. The presence of multiple PDF links, including one to a potentially malicious redirector, indicates an attempt to drive traffic to malicious infrastructure.

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=michael+kors+shoes+size+guide In PDF document text
    • http://files.devotedtotheking.org/uploads/1/3/0/8/130874588/jizeb.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/1/0430/4027/6642/files/vemetuvelonurixenikitor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5296/8605/files/33450308227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/77729827350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/bafg_anlage_1_formblatt_1_ausdrucken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1497/9737/files/90833101212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5252/9829/files/zeliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/15891259229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/77197382541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/lumberjack_song_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9701/2890/files/6997882364.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 5

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_off000056f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F9 5320 bytes
SHA-256: f061883d01f0f17c0fb675275b2145699e96c1282b0ca31ff8784df8ee240173
font_01_sfnt_off0000690e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690E 14512 bytes
SHA-256: 4c34c2e7be7650a5b64838125aee45bf24e28d1d873a9f198e567359bb01c882

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