Malicious PDF — malware analysis report

Static analysis result for SHA-256 88faa145c10c0322…

MALICIOUS

PDF

111.3 KB Created: 2020-08-19 08:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f980548c5bb11f790275e7df25f3ac16 SHA-1: 3978d92f652683cc960cdd5c52f1e7c0c2f18b0c SHA-256: 88faa145c10c03223657480317408c3c8cf6da465a2b3ff25ddf0b6317eaac46
194 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to a known malicious redirector infrastructure, specifically 'ttraff.ru'. This redirector is used in conjunction with SEO link farming tactics to lure victims with search result-like content. The document body, though heavily obfuscated, contains the same redirector URL, indicating its central role in the attack. The ML classifier also strongly indicated maliciousness.

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=how+to+use+dope+sheet+maya In PDF document text
    • http://files.sjaart.ca/uploads/1/3/1/3/131382595/2313353.pdfIn PDF document text
    • http://files.cranberryhobbit.com/uploads/1/3/1/3/131379894/ba21425f73e13.pdfIn PDF document text
    • http://files.simamartialarts.com/uploads/1/3/2/3/132303012/96d327f427f67.pdfIn PDF document text
    • http://ridafiwas.genesis-park.com/uploads/1/3/0/8/130874012/sonaxakalus.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/1/0431/5843/8056/files/19746967784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/pefuwefuzubaninivaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1210/4103/files/actionscript_adobe_flash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/57205641669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/4585731140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/febinugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/17222794194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/sodium_bromide_msds.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 4

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_off000176de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176DE 5228 bytes
SHA-256: f505111964750619e390fad3830d833a1b14ac9eef8e9c0d790f9c7a38cdf23c
font_01_sfnt_off00018899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18899 12260 bytes
SHA-256: 333e36eae6e12d5e2ab2a4ccb77e949a40d0f0049fed066cbe6ba33b3b53c2e6

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