Malicious PDF — malware analysis report

Static analysis result for SHA-256 357f117a3ba27e12…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 18:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 475088b3dcadbdb51fd56870a6666fff SHA-1: 26f900e06bd6c60a424e60bcaa2e99dff5b08373 SHA-256: 357f117a3ba27e124d31d071b3593bce88dcbce93087cc31372e5d01f6db6739
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the initial links, 'https://ttraff.ru/pify?keyword=gattu+battu+serial', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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=gattu+battu+serial In PDF document text
    • http://vaxag.teaandbiscuitconsultancy.com/uploads/1/3/0/7/130775573/aff9b591a4d6.pdfIn PDF document text
    • http://files.atdesignpartners.com/uploads/1/3/0/8/130873908/74ecda240cbb.pdfIn PDF document text
    • http://files.counsellingpsychologist.services/uploads/1/3/0/9/130969555/7582248.pdfIn PDF document text
    • http://files.haynesgolf.org/uploads/1/3/0/8/130874433/b38ad47.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/1/0431/2144/2977/files/chatterjee_and_shinde_biochemistry_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/gemumanazetulaxeruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7246/9669/files/pivetazikusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/wevaxiluwawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/slow_cooker_recipes_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/damudibujosemofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/mafutop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/85972823370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/armed_forces_tribunal_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/zoboferadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/penuditakefuxugawemakoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pusowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/98179920471.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_off000057a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A2 4848 bytes
SHA-256: 21a48a1b17312cd79c2edd691eabbea410fae48842b0fb21cc34b69be92d7ea3
font_01_sfnt_off0000682c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682C 9856 bytes
SHA-256: 4bf28878804b72a0ff7846faa6c7381f6743b656666146584f32cd268f85ca3f
font_02_sfnt_off00008a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2F 4408 bytes
SHA-256: a5e2d0074ecfc34982db9c8fed5c73e0f0ed21364d7b88478768e3cdd5f33518