Malicious PDF — malware analysis report

Static analysis result for SHA-256 70523c505fbcfb83…

MALICIOUS

PDF

42.5 KB Created: 2020-08-17 18:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 857e4d7f2796cd13b06e45793629068a SHA-1: fc7085ddfd4fc03e353e0517a7c8b8e4bd31a2b2 SHA-256: 70523c505fbcfb83318aafd01a3044618f42c0365ae50659f16d59758deae5e1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector to malicious infrastructure at 'https://ttraff.ru/pify?keyword=diploma+template+ppt'. Another heuristic identified a link farm pointing to various PDFs, including one hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, suggesting it's part of a phishing or malware distribution scheme.

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=diploma+template+ppt In PDF document text
    • http://xedupeba.pechamps.com/uploads/1/3/0/7/130739024/sajazusagonun_mesamu_fonorewikoxe.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/1/0435/3287/7976/files/80678501140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/jixewutaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/lerewubekezodusobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4566/5433/files/pagulunigiduduve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/14469593273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/zoology_notes_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/primus_jerry_was_a_racecar_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/96989039879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5738/8451/files/synonyms_for_ielts_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5816/6949/files/singular_and_plural_nouns_sentences_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0460/5094/files/bivariate_data_in_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/texokesowasumutavudekakib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3212/files/disadvantages_of_computer_assisted_instruction.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
🗂 Part of campaign: pechamps.com 4 samples

Related samples 2

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_off00006b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B99 4692 bytes
SHA-256: ac8ffed90cd2be40ee8cdacaeb6063df0095e7736357fa688ec16eb7dac19065
font_01_sfnt_off00007b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B77 9920 bytes
SHA-256: 8e61dabe30187322370cf72b2ccace4e10a83ccdeb4758e32e05d8c04130be47

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