Malicious PDF — malware analysis report

Static analysis result for SHA-256 12927e987479eb97…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 12:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c89b06e8b3e780d8deda921badecb146 SHA-1: 6c7c3911135b6f7b64373ca96ca2e1502e188ea4 SHA-256: 12927e987479eb97723f340552be368a48c0577d3d48cb351019bc9db629f04c
194 Risk Score

Malware Insights

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

This PDF file contains multiple links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=expresiones+mas+comunes+en+ingles+pdf'. The document body and heuristics indicate a tactic of creating a link farm to lure users into downloading potentially 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=expresiones+mas+comunes+en+ingles+pdf In PDF document text
    • http://files.fvhca.org/uploads/1/3/0/9/130969169/jeluloxutol-gukunes-dubobuwov.pdfIn PDF document text
    • http://files.jjrrlab.com/uploads/1/3/0/8/130873907/75d05.pdfIn PDF document text
    • http://files.socalvetsupport.org/uploads/1/3/0/8/130874652/simapunomaped_rudenevamamin.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/1/0432/7879/4917/files/xuxazebezozel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8493/7384/files/amway_atmosphere_sky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/mawoworanapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/37455777469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/nikita_season_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/30547831232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxasukazojolivuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/nero_6_serial_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/gugeratowijoroxefisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/39595813427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/principles_of_surgical_asepsis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8431/6823/files/sweet_dream_marilyn_manson_tab.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 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_off000065ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 5500 bytes
SHA-256: 589c39740a888292f463ca2492ba9d841ca4166284db74276c04658ff149cd38
font_01_sfnt_off0000788b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788B 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8119 11420 bytes
SHA-256: d262526d2284a6fbaa0691ae66295b2b5c79886d1ec29ab494b166870fa32597

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