Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72cc195bb777b5b…

MALICIOUS

PDF

55.5 KB Created: 2020-08-05 23:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74341dde27473e14a1b48df6b25fd6de SHA-1: 78ade4d5c5b6b1eaba199aad9f83abbf10d8f104 SHA-256: a72cc195bb777b5bb7bd2293fc631205278cd59219fa853f04b688c65f9b5601
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to manipulate search engine results, leading to a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=idioms+and+phrases+with+marathi+meaning+and+examples+pdf. This suggests a social engineering tactic to drive traffic to potentially malicious content. No scripts were extracted, limiting the analysis of direct payload delivery.

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.com/pify?keyword=idioms+and+phrases+with+marathi+meaning+and+examples+pdf In PDF document text
    • http://files.apwilder.com/uploads/1/3/0/9/130969498/725e3ac8997.pdfIn PDF document text
    • http://files.sunshineshopgiftbaskets.com/uploads/1/3/0/9/130969322/tofiwupotalabomuz.pdfIn PDF document text
    • http://files.stambrosefostercity.org/uploads/1/3/0/8/130874143/nurugameb.pdfIn PDF document text
    • http://bufage.roselleyouthtrack.com/uploads/1/3/1/6/131606490/ec67e53f2fa9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/94104805394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/96160618501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2589/files/jinelapenuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/xikokapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/varobezizegixatisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/laxumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/79950687958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/gusapomudimodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/africa_political_map_outline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/vekodusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2638/0960/files/ditavutivorovorovebiweno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/ximinamibakelogeloti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/14903218429.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F19 5552 bytes
SHA-256: d62a8c05eb6f20551995e8711a88473734c23dde2e7d4866a286ee19bc876250
font_01_sfnt_off000081eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EB 13656 bytes
SHA-256: 15418d0c9545db6b32250ac14483b695ff7923b0353914a73240c431002dae29
font_02_sfnt_off0000ad78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD78 10836 bytes
SHA-256: ffc0c0457d4639e9bd34357240815e5dbc6a15f5f28616a386207b2a36aa7dd1