Malicious PDF — malware analysis report

Static analysis result for SHA-256 da28a8fe57be65b7…

MALICIOUS

PDF

45.9 KB Created: 2020-08-07 03:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0f1f35e3545943f4593315b7c328d0e SHA-1: 781487d65b725a8d8d6f5057a7d75aac46460c57 SHA-256: da28a8fe57be65b77279199a146ada4665ee734c28a04b042f866e3cf4925db1
234 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=adeptus+mechanicus+8th+edition+codex+pdf+vk', suggests a lure related to gaming content to entice clicks. The presence of numerous external links, many pointing to Shopify domains, indicates a strategy to distribute or obscure the final malicious destination. No scripts were extracted from this sample.

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.cc/pify?keyword=adeptus+mechanicus+8th+edition+codex+pdf+vk In PDF document text
    • http://files.moldandwaterdamagespecialistinc.com/uploads/1/3/1/1/131164236/aaedee1cba232ab.pdfIn PDF document text
    • http://files.thingsbybean.com/uploads/1/3/0/7/130738524/laterajuna-kerigo-fejepu.pdfIn PDF document text
    • http://files.thefountainoflife.co.uk/uploads/1/3/1/3/131379343/efbd85c2fd033.pdfIn PDF document text
    • http://files.somethingblueweddingdjs.com/uploads/1/3/1/0/131071258/3630513.pdfIn PDF document text
    • http://xitesot.ecoledemusiquejoliette.com/uploads/1/3/2/6/132681670/fd346e6d779eee7.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/1/0435/2134/3647/files/cartografia_auriculoterapia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4579/5493/files/penyebab_bronkopneumonia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/la_ferme_africaine_karen_blixen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/64829761377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/wukusuzudeduzutavini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/rokekikejoxemoraloxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/59676220279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/81712854683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/53355796077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/ralifite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/adobe_reader_for_linux_mint.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_off0000710b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5644 bytes
SHA-256: 9bb727832e89bda6885b82a94637a1128677338917ad23700b540bc74796d613
font_01_sfnt_off00008430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8430 11184 bytes
SHA-256: 53c74c1846f982f8c4f40d1d33a7519026a39192801b94107d4bfdcb8bd86e9c