Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be7520463cdd2dc…

MALICIOUS

PDF

37.7 KB Created: 2020-08-18 22:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1aa06ff464aa59e1f3b870c52a414620 SHA-1: b96ccb2d784ebc35e0773e489994bef7cbc976eb SHA-256: 5be7520463cdd2dcfb750913ead93a3302003a46d4951db693891dc5288fcfcc
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs, a technique often used for SEO manipulation or to host phishing lures. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=rust+sheet+metal+scraps, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics indicate a malicious document intended to redirect users to 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.cc/pify?keyword=rust+sheet+metal+scraps In PDF document text
    • http://files.immigrationbenchmarking.org/uploads/1/3/1/4/131407299/kamag.pdfIn PDF document text
    • http://files.villagescommunity.com/uploads/1/3/1/4/131407226/4927010.pdfIn PDF document text
    • http://xivawi.san-vito.co.uk/uploads/1/3/1/4/131437736/febobe.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/1/0433/5910/9279/files/git_add_all.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/86699386619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/gonodiwubibijebiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/77573576773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/shakira_waka_waka_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/55223413516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2017/1936/files/aatagallu_movie_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/7906768099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5947/6630/files/61494423045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/lezavisem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/17475745356.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 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_off00005661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5661 5180 bytes
SHA-256: 4d562d35794c3ddcf729ea7c914f986dbf406723de5e8b3da6cf382207df0f3b
font_01_sfnt_off000067d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 10052 bytes
SHA-256: bbd7cf0f776d9b66ceb79723dbb72c65c1d6c01ca9e5f0bcfb1d2f68a0941975

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