Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddc20a6ec5ff0e7…

MALICIOUS

PDF

42.0 KB Created: 2020-08-27 15:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a90ae25f92b87d39f46306637b7a35d6 SHA-1: f28f1596e7f86c5a59d881fb14520922c5c344f0 SHA-256: cddc20a6ec5ff0e7627907d9245b3a92b8da9f2f0d0c2f0addcbc4d12645da1d
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=goodgame+empire+building+guide', which is flagged as malicious. Additionally, the document exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The ML classifier also strongly indicated maliciousness. The presence of these elements suggests a campaign to drive traffic to malicious sites, likely for phishing or malware distribution.

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=goodgame+empire+building+guide In PDF document text
    • http://files.glynhaynie.net/uploads/1/3/1/3/131380875/gagawagagoka.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/1/0431/0673/0138/files/gasefapuxirubozetik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/58795073484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4545/files/uttarakhand_bsc_nursing_entrance_exam_previous_year_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7887/files/laptop_bluetooth_windows_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/comment_fusionner_deux_fichiers_foxit_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/74543147858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6661/3141/files/carcinoma_de_pequenas_clulas_de_pulmo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7224/0293/files/tuturob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/18963728912.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 2

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_off0000669b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669B 5272 bytes
SHA-256: 2ce75c0dc1f866d0bf349beead642969d780448f6512360049b90c07fd66be61
font_01_sfnt_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10288 bytes
SHA-256: 33aaf2914783c0c3a5416132f1af564d88a99c1f0a1c9443ec9dbd74d370842c

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