Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb694fc8d9c0a73…

MALICIOUS

PDF

39.0 KB Created: 2020-08-09 05:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c013c2ac0d1b0b79b4677ea5156f065f SHA-1: 2a201e4c058805235e25209a1bd8a526e7f44e37 SHA-256: ccb694fc8d9c0a737f60767c6b23c8e679cb192611d60aa0bdc815899173eef3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm behavior with 26 external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and link farm strongly indicates a malicious intent to redirect users to harmful 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=best+pdf+reader+android+no+ads In PDF document text
    • http://files.valeriesavarie.com/uploads/1/3/1/1/131163635/719707.pdfIn PDF document text
    • http://files.grandmassoapandstuff.com/uploads/1/3/0/9/130969386/5678083.pdfIn PDF document text
    • http://files.kachinacountryusa.com/uploads/1/3/1/4/131438397/9475990.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/1/0429/5429/3402/files/dolalazilafolikuxigajeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/35517048982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/microsoft_wifi_direct_virtual_adapter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/59915988831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9357/1224/files/53177318273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/advanced_excel_tutorial_point_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/34607004543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/46205498662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/giguvabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/jquery_remove_option_from_select.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 6

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_off00005ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 5052 bytes
SHA-256: e1831f4e96c7091310539bed3a0b228ab50bcd43d2837f36e816176968ab92ac
font_01_sfnt_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 9300 bytes
SHA-256: e35bea13a2e19cb5e3308adce48907b1b1f4a4d0aedacd50aa409172b1252adb

Open this report in the interactive analyzer, or submit your own file for analysis.