Malicious PDF — malware analysis report

Static analysis result for SHA-256 1567a7b830481e3b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-08 06:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 414e1e06daeb1363e853b3ee8afbb2d5 SHA-1: 135ba78efb27dc8631b858bf0f63eb169cb5f0d6 SHA-256: 1567a7b830481e3b3440592a9545e77b28b8e270779b5379dcf682b74bff2a43
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one that redirects to a known malicious infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains references to the same URL, suggesting a phishing or scam attempt disguised as a free download. 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.com/pify?keyword=poultry+diseases+and+their+treatment+in+urdu+pdf In PDF document text
    • http://files.topdogracing.com/uploads/1/3/2/8/132815123/9c36bc.pdfIn PDF document text
    • http://files.hornsbyptsa.org/uploads/1/3/1/3/131379434/bomujakurufilo.pdfIn PDF document text
    • http://files.highcountrycorals.com/uploads/1/3/1/3/131398479/9768051.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/1/0429/7618/2426/files/kasivovomifafuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/free_bass_guitar_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/20204789541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/multivariable_calculus_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4422/files/radogupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8325/9285/files/artist_management_manual_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/japaxazijovaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/6001581028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/burelumuramo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/tategakenu.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_off00007aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABA 5384 bytes
SHA-256: 2f81f574cae8af075a7a37f777182aa0dc74616e9e36f739d4f2eec30cb6e728
font_01_sfnt_off00008ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE5 9900 bytes
SHA-256: 61bd16dc5b25b6bdf27bdfb3ba5afd9527d5675e7912252907c082685da9a1f6

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