Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9806413a6058d6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-07 15:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37f3865ae1dde97a2128af7e769818ce SHA-1: f9bbcd8460063d6def47bac8faad23c022860143 SHA-256: df9806413a6058d625447f15885b5d0eed733951188c2f025ddd2b88981b0709
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text suggesting a file conversion lure ('Psd file to pdf'). The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to malicious sites.

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=psd+file+to+pdf In PDF document text
    • http://files.mikethecarguy.net/uploads/1/3/2/6/132681233/tasotazolupo.pdfIn PDF document text
    • http://files.atheistsurvival.com/uploads/1/3/0/7/130739776/nefurex-zefafobakexezi-wadokut-pofadubifu.pdfIn PDF document text
    • http://fegekubeg.sdkuykendall.com/uploads/1/3/1/4/131438539/634ac0a7cce5.pdfIn PDF document text
    • http://files.eliteedgesss.ca/uploads/1/3/1/3/131382470/puzibujemibaz.pdfIn PDF document text
    • http://files.tampabayfm.net/uploads/1/3/1/4/131453350/duveb-dijir-lifajajomi-tumolisoxuwifa.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/1/0435/5060/5461/files/kinuxetofexow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/gapujijajeneruteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7391/2488/files/fatovavexusonepeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/2162196227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/list_size_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/82487931656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/nogovemixilefalenegojega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/warhammer_40k_ork_codex_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7232/9630/files/pytorch_initialize_weights.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/73323300459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.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_off0000650c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 4728 bytes
SHA-256: f65b519419945a61d811488060a277516ab07626a2816a26a588cd3c745d8930
font_01_sfnt_off0000753d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 10364 bytes
SHA-256: 5799e8c4c3775b02311227eb76b16a32eee5aeb51269f14d19f1241f1269e647

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