Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d004667bb8fbf9…

MALICIOUS

PDF

54.7 KB Created: 2020-07-30 15:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c971b2db025c98f577dd76307949077 SHA-1: 33052bc100f80710244e85831b514916ec1f0d23 SHA-256: 78d004667bb8fbf9985052572d4f4555a2f7e915e5bc6cd32f631e08e1bb0a68
194 Risk Score

Malware Insights

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

The PDF file contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to attract downloads. One prominent URL, 'https://ttraff.ru/pify?keyword=amaravati+kathalu+pdf+file+free+download', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to 'free download'.

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=amaravati+kathalu+pdf+file+free+download In PDF document text
    • http://files.midpacificowlrobotics.com/uploads/1/3/1/4/131483031/5ce249d84d51.pdfIn PDF document text
    • http://files.mrshowesclass.com/uploads/1/3/2/7/132740502/nutelokujafoxo-vufugawon.pdfIn PDF document text
    • http://files.christianlarsonbball.com/uploads/1/3/1/4/131406977/a1bb9e2.pdfIn PDF document text
    • http://files.kippcourage.com/uploads/1/3/2/8/132814305/pizubarij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/goxewowiker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/kujawil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/rotexul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/mofoxivokidis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/16228319131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/20691581993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/39976754743.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_off00006a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3E 5192 bytes
SHA-256: b6ca22275526976adbbe336f2f1c3dbe49b1e9f38cafee54e8fe5c4d9bf50199
font_01_sfnt_off00007bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 19560 bytes
SHA-256: f85d78ffebd9d6fddb625d403f6ff94782bb80f8386e2404e6919548fd3be734
font_02_sfnt_off0000aa43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA43 10256 bytes
SHA-256: 4dd19d8e9fd2734f4d1350e671181f018a1e600c0c7a2556a05d8a300b7bf61e

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