Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62c418f8592edda…

MALICIOUS

PDF

54.7 KB Created: 2020-08-15 10:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f45321b5b7455a27efb5be8980867a47 SHA-1: 2cf07731430cb24125330d851544e9aabb6d62e4 SHA-256: b62c418f8592edda0dea16a6659ace7e1b983168a6ccb8b27e7478ae78ab9ace
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is used in conjunction with a keyword related to Android encryption. This suggests a phishing or malware delivery attempt. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farms used to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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=android+9+encryption+samsung In PDF document text
    • http://files.coastalleadership.net/uploads/1/3/0/8/130874676/9627383.pdfIn PDF document text
    • http://dapamip.degaband.net/uploads/1/3/1/4/131408849/3e43a44b2d.pdfIn PDF document text
    • http://files.c-x.com/uploads/1/3/0/8/130874067/046ff6781389b.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/1/0431/7904/9121/files/fapinuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/20024917867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/murmurer__l_oreille_des_femmes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/investigacion_de_campo_definicion_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/dorebuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1569/1675/files/xoneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/15772821852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/2003_road_king_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/folutinajajitutedulibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/nikon_coolpix_s570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/72525899115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1900/9189/files/chain_growth_polymerization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/wixoxosawasutaworulub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/78260874212.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
    • 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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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
font_00_sfnt_off000084ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EC 6424 bytes
SHA-256: e637e929042e3978bec96b31b3490ba660419ed310d31d627162007a830036f1
font_01_sfnt_off000094cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94CD 5608 bytes
SHA-256: f254cf3520cd38b47ba0e6fbea73408be2a407d795d15ef5589a602f61395241
font_02_sfnt_off0000a7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D1 10924 bytes
SHA-256: 180d4d679c985789cb97eb5b0f0b75df81deb3448fa350266df2a98412cf7a72

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