Malicious PDF — malware analysis report

Static analysis result for SHA-256 86625a947970650a…

MALICIOUS

PDF

79.5 KB Created: 2020-07-30 07:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bf38ff30b6dd509920ff670b6284fe2 SHA-1: 171b4b728238960206771a55e9e9b75dc5ac87d6 SHA-256: 86625a947970650a03ab53c69fb160beb2752dab22ed335494bc9857d2267559
194 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to a redirector service (ttraff.cc), which is flagged as malicious. This indicates a phishing or scam attempt, likely using a 'free download' lure as suggested by the SEO link farm heuristic. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=barrera+hematoencefalica+pdf In PDF document text
    • http://files.waterperryoperafestival.co.uk/uploads/1/3/1/4/131437685/551cd52a.pdfIn PDF document text
    • http://files.equityallies.org/uploads/1/3/0/7/130740050/nukufalavupag-jamitavejux.pdfIn PDF document text
    • http://files.icookyoudinner.com/uploads/1/3/1/3/131381706/fe51dc2.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/1/0437/5740/4318/files/52199346737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/52800128318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/tokepewam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/virenejimowewikero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/zililutifevofuximufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/55516341311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/9369583066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/nujaxatefubavamimejitux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8146/6005/files/newilaxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4215/9257/files/rovivedozituwupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/texuworupidutal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/1942989525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/satexopoxitilelaxav.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 5052 bytes
SHA-256: 0f2a9e9c6ea469331d93925b3f5a5297a40effd8f6ec37e7fdfe39b11db5a292
font_01_sfnt_off0000f701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF701 10592 bytes
SHA-256: 1ceb5c3add36039148634fcc470f80191ceb4a7ab32e7b114ed890ff61b1c74e
font_02_sfnt_off00011b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B53 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833