Malicious PDF — malware analysis report

Static analysis result for SHA-256 da27fb708eef8c04…

MALICIOUS

PDF

62.1 KB Created: 2020-08-04 03:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78177c633f75e3f8053c8565e001ffa0 SHA-1: 390fa86f65296b2e6a26ea0adbecf51dccc23513 SHA-256: da27fb708eef8c0442fdc5f08c4dc654329a1c11e674e89eba0e827db02577fb
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the primary links points to a known malicious redirector at 'ttraff.com'. While the document body contains text related to English phrases and PDF, it is likely a lure to disguise the malicious intent of the embedded links.

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=frases+mais+usadas+em+ingles+com+tradu%25C3%25A7%25C3%25A3o+em+portugues+pdf In PDF document text
    • http://files.annakeo.com/uploads/1/3/1/1/131164417/4c0637f699f9d0.pdfIn PDF document text
    • http://files.gloriousseaglass.com/uploads/1/3/0/9/130969966/xokemolixilazuneluka.pdfIn PDF document text
    • http://files.literarycats.com/uploads/1/3/0/8/130874264/3121f92e25bf.pdfIn PDF document text
    • http://files.pereiraroshan.com/uploads/1/3/2/7/132740905/mivutejogexolej_kamar_baburezuxezu_subotulesuruno.pdfIn PDF document text
    • http://files.prismcounselingservices.com/uploads/1/3/1/4/131438069/9059803.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/1/0433/0687/7080/files/vonabubabosutogoxofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8842/9724/files/archie_comics_chilling_adventures_of_sabrina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/xerukujuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/detalunibemav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/72484559680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/fewigugaguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/lapamiferavixowoniduvufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/kopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/kofalevisomapovasudir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/58837875621.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA825 5932 bytes
SHA-256: 45ce72d6cef919727ef10a7395ce1027d666655914a1501751367ece14377868
font_01_sfnt_off0000bb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5E 15472 bytes
SHA-256: d8897c99341bc4354b8b8c888c58932483a83735d506d5e8b607b5f1879ed051

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