Malicious PDF — malware analysis report

Static analysis result for SHA-256 809f10eb2caef7f0…

MALICIOUS

PDF

43.3 KB Created: 2020-08-10 19:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b59e71086720c97e89ea76880095a28 SHA-1: bb4f85cb28eb43e16a51d89f611e63414581bc3f SHA-256: 809f10eb2caef7f0fe39722324370e771a407d0f580ee278d90abe13896f94cf
234 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords like 'Mahatma gandhi biography pdf english' and URLs, indicating a lure to download further malicious content. The presence of multiple PDF links, many pointing to Shopify, suggests an attempt to create a link farm for SEO manipulation to distribute malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=mahatma+gandhi+biography+pdf+english In PDF document text
    • http://files.cyber-sec.us/uploads/1/3/0/7/130739404/4066452.pdfIn PDF document text
    • http://files.palmbeachdayacademycoralproject.com/uploads/1/3/1/1/131164009/7865369.pdfIn PDF document text
    • http://files.shotoryujutsukarate.com/uploads/1/3/1/0/131070792/jivilegewase.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/1/0432/0133/1360/files/38742021785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/andrew_ng_machine_learning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/zagevalaposebadez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/28080980500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/22431221786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/89921361317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/79613496908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/nopesujiwobisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/napopezofawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/standard_phonetic_alphabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/zarekubimifidosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/53531906212.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_off00006a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5704 bytes
SHA-256: e9a0b12a8b970f4f172b55ddff399ab248590c700557f5ce42e4d1b9764e7116
font_01_sfnt_off00007d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 10340 bytes
SHA-256: 94dfda8990a892247aee09c57aa4bb0561b58ada1d0a17d9e68f9b8673a312d2