Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c513cf810b6df34…

MALICIOUS

PDF

82.4 KB Created: 2020-08-03 20:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e8ad762980f1a82aa658dfc3cdb1e0c SHA-1: 1fdf00e86e476c43cacd318fc3fa450df8b92782 SHA-256: 2c513cf810b6df34e1f5169e0fed54ad78799ef47ae113cd766c84d501d2c9bd
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a tactic to distribute malicious content or phish users. The primary malicious URL identified is https://ttraff.cc/pify?keyword=farsi+letters+pdf, which likely serves as a gateway to further malicious destinations. No scripts were extracted from this sample.

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.cc/pify?keyword=farsi+letters+pdf In PDF document text
    • http://files.joaomiguelbranquinho.com/uploads/1/3/1/4/131452963/47925.pdfIn PDF document text
    • http://files.anythingpaperkim.com/uploads/1/3/1/6/131637125/xabuvufukapigazalev.pdfIn PDF document text
    • http://files.npnbuyer.net/uploads/1/3/1/6/131637919/zodexufofewu_jenur.pdfIn PDF document text
    • http://files.meghannrader.com/uploads/1/3/1/4/131437859/419e5ae4c6b43f.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/1/0429/0114/3715/files/lekorugadojosewumonolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/saninobolobowakokaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1980/4567/files/12249774336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/97869337165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/vobupovivodetepida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6900/files/xitaveregireludokarufufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9748/7512/files/70359337162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/radenumezeleleramu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/72336706643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/porodokewolixejalezoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/rusirebimafenoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000f9ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF9EA 39792 bytes
SHA-256: d3b2cff80ae648c5d1a2473a48e7f7d4438479ff5063064d5810e072b51fcbe3
font_00_sfnt_off0000a162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA162 4988 bytes
SHA-256: 8f566ce1f2de429e60eecd020c6e406a5b6a119a7715e3fd46b0d080c5d9ffea
font_01_sfnt_off0000b22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB22B 6792 bytes
SHA-256: 0efe26d3edee0ec6bd598ecd78ec680c029cdaf30796094f9bd47d6cda2e03e5
font_02_sfnt_off0000c24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24C 19296 bytes
SHA-256: a52bae0a21437e88ecd2f4f4f4e892e3b951da5864e37bd488e4fad9ea76ac74