Malicious PDF — malware analysis report

Static analysis result for SHA-256 f47619641bf8e3a4…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 20:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1087e99c36256143c8358fabeb53aae SHA-1: 98b6086dd2263adf49e399d95aa3398692dc1b76 SHA-256: f47619641bf8e3a466d70c6a0c2a344dd8e449ab2378f819c02777592d839979
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains known for hosting malicious content or redirecting to it. Specifically, the URL 'https://ttraff.ru/pify?keyword=diferencia+entre+antigeno+y+anticuerpo+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links to Shopify domains, some benign and some unknown, indicates a strategy to mask the malicious intent within a larger collection of links.

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=diferencia+entre+antigeno+y+anticuerpo+pdf In PDF document text
    • http://files.phoenixspiritz.com/uploads/1/3/0/8/130874130/kinakufiloma.pdfIn PDF document text
    • http://files.gorboduc.com/uploads/1/3/1/4/131437276/2465617.pdfIn PDF document text
    • http://files.crosbyirontonmusic.org/uploads/1/3/0/7/130775364/susepep.pdfIn PDF document text
    • http://files.rivieranayarit.ca/uploads/1/3/0/7/130776208/retabejulu.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/1/0427/8291/6767/files/atkins_meal_plan_phase_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/19095061164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/73880364170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/14560130083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/receptores_de_angiotensina_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5042/9598/files/photobucket_album_downloader_firefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/58836116516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/powotoviwizefume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9785/7954/files/tawexiwujerakag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/mito_di_amore_e_psiche.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/monamapo.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 3

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_off00006625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 5216 bytes
SHA-256: df298eb7c78c8a00e4e7afaca7a24560b3396e08ac535f53562132a4aa08484b
font_01_sfnt_off000077f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F8 11216 bytes
SHA-256: 3f4c70a2d72ea4c6153b9fdb5ee508fffe9858b46f3a2fd977fe36f88c56d8b4

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