Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f44ba1285a7445…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 17:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 571e474ac96a30ae1ff54b05f1a67dad SHA-1: e353b641978b15f9258f6f16795bfd5e09053148 SHA-256: 42f44ba1285a74455846df955f8ea1899556651ddf1cceadabdf3dfcae74e9c3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=low+back+pain+arthritis+uk+pdf', which is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a lure to a malicious payload.

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=low+back+pain+arthritis+uk+pdf In PDF document text
    • http://files.creativerecyclingworks.com/uploads/1/3/1/0/131070212/bcd4c47.pdfIn PDF document text
    • http://dodifi.fredaswarrington.com/uploads/1/3/1/4/131452977/xoguni.pdfIn PDF document text
    • http://vobisifef.happymamahappybaby.us/uploads/1/3/0/7/130775422/727919c5df83.pdfIn PDF document text
    • http://files.imaginesullivant.org/uploads/1/3/2/7/132710795/mikuwub.pdfIn PDF document text
    • http://files.lifestylehealth12.com/uploads/1/3/1/6/131636988/a790bd70c.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/1/0433/5117/9423/files/multiplying_polynomials_worksheet_algebra_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/69421364407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/how_to_copy_from_kindle_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/55347009907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1346/7286/files/ode_to_autumn_poem_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/11654748238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9538/3461/files/muxufinisopubaliponudaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/hot_rod_frame_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/fafuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/magipatirimiliroseponux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/tegetedazosuxukunupegagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/analog_and_digital_integrated_circuits_notes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000682d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5448 bytes
SHA-256: 4d309f0ddd0297db58b0cdacf07a51844ebf48a622e13d2c79136a13337fae0d
font_01_sfnt_off00007ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB7 9932 bytes
SHA-256: 5fc44f958e4de85234cad901c4600e6d9b51cd5aac8f493aba0a1f9690a004e8