Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ecc2dc31429004…

MALICIOUS

PDF

37.7 KB Created: 2020-08-11 08:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23802e2384e71726ba612f0ca886f26c SHA-1: 0711ecef8f28e4c420a6e44df9eabbfcb24be596 SHA-256: d9ecc2dc314290049a11fb6bc2618f2153f345c3304afbd98c8d6add12452246
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains numerous embedded URLs, including a suspicious one pointing to 'ttraff.ru', which is identified as a malicious redirector. The presence of a large number of external PDF links suggests an attempt to manipulate SEO or distribute further malicious content.

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.ru/pify?keyword=evaluating+variable+expressions+pdf In PDF document text
    • http://fukosanoj.kauaimusiceducation.org/uploads/1/3/0/7/130739664/lowozokawiselajo.pdfIn PDF document text
    • http://foxesoti.paleoplaycanmore.com/uploads/1/3/1/3/131383483/wabevaveguzipo_voxawe_ziniwosedolaw.pdfIn PDF document text
    • http://xeberub.booksbyrjsimon.com/uploads/1/3/1/6/131607163/6153446.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/1/0429/5242/5631/files/fegexitofudarizonedawet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/totodimiwekosisifizomor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/winokozepuginonid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/centroid_of_all_shapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/62646078627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1458/4477/files/amoeba_sisters_asexual_reproduction_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/91150236815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9113/2577/files/dekamilajavurosego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/cuentos_reunidos_amparo_dvila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/42011280770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/86358396575.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 1

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_off000054e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E9 5432 bytes
SHA-256: 391ce31149b6835a9d266bf63a51a6453f05a2aadb2f03ef4406ca6cc058c58f
font_01_sfnt_off00006772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6772 10064 bytes
SHA-256: ed8d56f4414bfca839c5949ecd91d8353ff01e9d72d95ed24d5e17c44d32c217

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