Malicious PDF — malware analysis report

Static analysis result for SHA-256 691bf0859ea4c3c7…

MALICIOUS

PDF

48.1 KB Created: 2020-08-14 19:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b811bfb1f39d0be25ad6ea376a62e1f SHA-1: bae50495a294f513d07ce833cccee54162dca9b6 SHA-256: 691bf0859ea4c3c7e133356f747e2085fd395a2cefa9ee1bb200dfe9f874d29b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL that is also flagged by heuristics as a redirector.

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.cc/wb?keyword=the%20world%20is%20flat%20chapter%201%20pdf In PDF document text
    • http://vokopubi.dreamcatchermeadow.com/uploads/1/3/0/7/130740257/3963339.pdfIn PDF document text
    • http://files.texascityhschoir.com/uploads/1/3/0/8/130873708/tapuzerupis.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/1/0437/8837/0072/files/juradamikogisamok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/31953080646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/lafasanesumiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3436/9438/files/mysql_php.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4784/5030/files/list_of_acids_bases_and_salts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/business_dinner_invitation_email_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/dio_rainbow_in_the_dark_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/wawud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/70860037111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/jolonerori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/zafikeloxiludede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/panolotisiwepexosav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/windy_escape_pathfinder.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 3

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_off00007da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA0 5336 bytes
SHA-256: 5821b478fecf978c380813f05d668a57800f085e3a2a868c8fd1ebdb3c88dc1b
font_01_sfnt_off00008fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDB 10312 bytes
SHA-256: 0bf06970e8fc532530dba37a0b62a8226c44d379838ddbe5dc704beb5b0c0f63

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