Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d71de56d68f8ee…

MALICIOUS

PDF

61.3 KB Created: 2020-08-10 17:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 963a8f30e6a4824b6cf10760e1158438 SHA-1: e91ca1c83167018e18927223c1fce2f9013a3462 SHA-256: f2d71de56d68f8ee6b9fdfe1b2835fc9e761d863f971357822e459c00e7176cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented in the document body, disguised as a link to download an 'english story book pdf file'. The PDF also contains a large number of external links, many of which are likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is 'https://ttraff.com/pify?keyword=english+story+book+pdf+file+download'.

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=english+story+book+pdf+file+download In PDF document text
    • http://files.studiosfinearts.com/uploads/1/3/2/6/132681204/zizaxovojenanamiliz.pdfIn PDF document text
    • http://files.eullallia.com/uploads/1/3/1/4/131454816/xojamamuf.pdfIn PDF document text
    • http://files.backwoodsdogboxes.com/uploads/1/3/1/4/131406827/4717485.pdfIn PDF document text
    • http://panij.funnyjackmusic.com/uploads/1/3/0/7/130775432/1770561.pdfIn PDF document text
    • http://files.matriarchevents.com/uploads/1/3/0/7/130775138/zarix.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/1/0428/9105/1161/files/biographical_essay_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/git_bash_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/11259983996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/anatomie_chirurgicale_de_l_estomac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/83307897861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/jagofuvoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/vikis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/rejarufaximoxufafuvatex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9333/4947/files/adaptive_reuse_extending_the_lives_of_buildings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1373/2512/files/dakasapaguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/sexonufuwobagawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/kijekejikavewinaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/midunatuxatotitixisude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/welorelagupu.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_off0000a932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA932 5656 bytes
SHA-256: 43425f6a5547c22455bf5d268e597ff772ec379c014f7b390bc1577642985a21
font_01_sfnt_off0000bc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC87 13736 bytes
SHA-256: c2b4826b94a034faeefce9e4272603cbfac8b03d0db56627e147aa37833c4a25