Malicious PDF — malware analysis report

Static analysis result for SHA-256 d164c28597b1b527…

MALICIOUS

PDF

44.9 KB Created: 2020-08-15 02:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b7d8ee682c5f6e0cc0bfdf728414c70 SHA-1: 26570fb73b7cfcbc0274549228ae7b01e91cc575 SHA-256: d164c28597b1b5279ab6bedab5baa1af66d78a4ac829995009abf0048451a5f4
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=descargar+aplicaciones+para+android+gratis+full'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading applications. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting the malicious intent of redirecting users to potentially harmful content.

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=descargar+aplicaciones+para+android+gratis+full In PDF document text
    • http://nomepid.heliamusiccollective.com/uploads/1/3/2/8/132814930/bamozokudur-kaxiragufiwasa-kukarowi.pdfIn PDF document text
    • http://files.ghiraa.com/uploads/1/3/1/4/131454373/8db54ae305.pdfIn PDF document text
    • http://files.myeirestory.com/uploads/1/3/0/9/130969260/6449758.pdfIn PDF document text
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.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/1/0434/4256/9368/files/77209357829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/munewuvogelow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/rig_veda_in_sanskrit_with_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/mobaxibetosaxoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1118/6588/files/58742277504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4181/5718/files/harley_quinn_and_joker_comics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/94266017588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/lipinibizofavorivatag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/belomezenegij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/fofadegosabomevegunebani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0987/5873/files/bejikibuzuzufimorigigejek.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEC 5320 bytes
SHA-256: 6e2e4dfa58bcc98cd4f8218b6a6fee0c28ecb0d1f77a96f729a04e2896cc591c
font_01_sfnt_off00007f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 11448 bytes
SHA-256: 6497e2ef523583693e2d6d3a32db231fdd00c95a56b4e27e7da1cf7dfd764459

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