Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c974db09a339b9…

MALICIOUS

PDF

42.0 KB Created: 2020-08-09 10:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d882f7af9c33622f4101ddd30163dc61 SHA-1: 284154000b2ad27bcc3be427c966796f1d59db21 SHA-256: 64c974db09a339b9ee443ef5744c4a2cb5ee5ecabd8923c4f4001d5bb148a71b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate PDF downloads, but they redirect to a malicious domain. The heuristic firings indicate this is a link farm and a redirector, likely intended to phish users or deliver a second-stage payload. The embedded URLs, such as https://ttraff.ru/pify?keyword=function+of+applied+social+science+pdf, are the primary indicators of malicious intent.

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=function+of+applied+social+science+pdf In PDF document text
    • http://files.customcontractinginc.com/uploads/1/3/0/8/130813975/roxoxiwag.pdfIn PDF document text
    • http://files.mutianyugreatwalltours.com/uploads/1/3/1/4/131407194/1041215.pdfIn PDF document text
    • http://files.toddrobbins.us/uploads/1/3/2/8/132816036/kufudo.pdfIn PDF document text
    • http://files.factorycarts.com/uploads/1/3/1/4/131453024/sutoge.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/1/0429/3227/3319/files/tadivegumimiwuxufifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/zezelodafawatidotuwan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/japeses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/97145899238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7516/4574/files/45001827052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/60027211557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3112/4385/files/1736843083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/cracker_barrel_menu_breakfast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1315/8565/files/ansel_adams_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/96748248709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3507/3448/files/jathaka_alangaram_tamil.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_off000066ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AC 5008 bytes
SHA-256: 09a673135eeb13e43dc091a3cd532404731205dbe6cb50d4b7685bfa53aedc61
font_01_sfnt_off000077cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CF 10448 bytes
SHA-256: dd99cd05d28f16714b4baf97d4c76376ad82106fc1e09bd1835d4d71521a7d72

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