Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f02893136648c22…

MALICIOUS

PDF

52.4 KB Created: 2020-08-02 19:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a98e6a3941424c724c0e8c30ae02624 SHA-1: 0930a27943d62057f23578366cbef157e7fdb2ee SHA-256: 7f02893136648c22e3f95320da08ba7f3d511b4677e0de7ceff8ac82cb5718c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service (ttraff.ru) that is associated with malicious activity. The document body, though heavily obfuscated, contains the same redirector URL and other URLs that appear to be part of an SEO link farm designed to lure users with fake download links. The primary goal seems to be directing users to malicious infrastructure under the guise of providing a PDF document.

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=classical+mechanics+john+taylor+pdf In PDF document text
    • http://files.amandamelissa.co/uploads/1/3/0/8/130874524/dudizoputovovud-gugubifufetebet.pdfIn PDF document text
    • http://files.dimotra.com/uploads/1/3/1/3/131398475/wedimazabewidef.pdfIn PDF document text
    • http://files.kvbfrancedesign.com/uploads/1/3/0/7/130775730/3845915.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/1/0437/9423/5553/files/27827436308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/69574763235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/28384599589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/janojifekomepuxebajoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/jafuwesefivapaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/gutirudosene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/feziwogatawowif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/92206608649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9733/files/1808169311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/danexovunaredogilofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/fimujo.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009e7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9E7A 21796 bytes
SHA-256: 8fc2170ca93a23bca8df713556a7a3e61a6fbb1b95b12732f8bef7a604620e35
font_00_sfnt_off000067ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EA 5476 bytes
SHA-256: adcafe83303ad7decd6390071d9a2e8112fd20a8ecdc4af39a713cdcc30cbdc0
font_01_sfnt_off00007a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 10508 bytes
SHA-256: f2f8c9cb6138c1c30002938ba45f8d17c5ea75f1c0daa661c1173e3f209ffc2a

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