Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ece81fe37812b9…

MALICIOUS

PDF

39.5 KB Created: 2020-08-18 19:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90a69c15b489e408b4c4d65f66ca0aac SHA-1: 3a23376971916fc76ae4c1526a63f8014f425bc8 SHA-256: c0ece81fe37812b92161000c40a2de16cad11dbedf5011513722ad1e5dfa8883
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One of the primary URLs, ttraff.ru, is identified as a malicious redirector. This suggests the document is designed to lure users into clicking links that ultimately lead to malicious content or further compromise. The document body itself contains garbled text and embedded URLs, reinforcing the link farm and redirection attack pattern.

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=sistema+monofasico+bifasico+y+trifasico+pdf In PDF document text
    • http://files.filmandartacademy.com/uploads/1/3/1/1/131163617/dasalojugedutabu.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/1/0437/2021/2635/files/45784532302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/bofevoroxosavujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/oxidation_reaction_of_alcohols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/8577355166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/kuzawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/familia_boletaceae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/sojixoxepasotuxokaxugipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/rudevanenegobukojinuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/byzantine_art_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2642/2696/files/19th_century_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/durifiziwugizugutuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/eider_jacket_size_guide.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
🗂 Part of campaign: danielstorage.com 7 samples

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_off00005813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5813 5616 bytes
SHA-256: 1c6d50b41140f47a5fc3550be05242c29cb8633ca0701189a8d7afc646fc6553
font_01_sfnt_off00006b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 11244 bytes
SHA-256: ead55162248a9438b8f836d7184dab6cc9970ea6734917139d5e72cf57466279

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