Malicious PDF — malware analysis report

Static analysis result for SHA-256 874add9e31eb1d39…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 21:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4158bb13964898fd048b479a4ee2c2f0 SHA-1: 5d598804c4209a8e822d4cbad0db01d18e54eeb3 SHA-256: 874add9e31eb1d39c5c395327457889b59739330bbd884005c5ff807772467a8
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, likely as part of a phishing or scam campaign. The document body and heuristics indicate a lure related to image manipulation, directing users to 'ttraff.com', which is flagged as a malicious redirector. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interaction for malicious purposes.

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/wb?keyword=ipad%20combine%20photos%20into%20pdf In PDF document text
    • http://fedapove.jnfr-w.com/uploads/1/3/0/7/130776716/wojawidelono.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/1/0429/6497/5765/files/15673767495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/31800982607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/blackout_poetry_maker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5237/1863/files/enlace_glucosdico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/82712901580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/difc_arbitration_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/bezodiwisis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/singleton_design_pattern_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/78084174329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7031/files/41707536095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/rumapotiwesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/cara_membuat_bookmark_dengan_adobe_acrobat_reader_dc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/64379538413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/the_unfinished_nation_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/96894262671.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000646e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 5344 bytes
SHA-256: bae193b2abbe091107cf901bd0dd34875650db58a84b6dc05552ddd847c5fda3
font_01_sfnt_off00007660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7660 4120 bytes
SHA-256: 7c4e7c28dae9a4f3056cf21d6284d9148ef17ef30849019f61463be8475b85fa
font_02_sfnt_off000081c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C6 10560 bytes
SHA-256: c95c482c04dd1ba236faced7196ca7ee4e197db9ac64d72bdf82a39ef5b225ec