Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbda44a750d4b92…

MALICIOUS

PDF

38.0 KB Created: 2020-08-20 02:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7aa1a4b6ccad91cc060cfad5a44354f SHA-1: 727fa2eeb069e7146bf6a665248734f9c37a195e SHA-256: 5cbda44a750d4b92e624a92976a815ba4b3547aea8e289fa08d9a5972ff30610
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to redirector infrastructure. The primary redirector URL is identified as malicious. The document body, though partially corrupted, contains the malicious URL and appears to be a lure for a 'free download'. The ML classifier strongly indicates 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=galactic+explorer+for+merge+cube In PDF document text
    • http://kijige.sikhsaaj.com/uploads/1/3/1/3/131380429/46e4d643.pdfIn PDF document text
    • http://files.dedhamcampfair.org/uploads/1/3/0/9/130969986/jiwisuxoridadovon.pdfIn PDF document text
    • http://files.leescrossroadmbc.com/uploads/1/3/2/6/132682970/volagikulox.pdfIn PDF document text
    • http://fofezexa.helgadeasydance.com/uploads/1/3/2/8/132815172/473454.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/37890134760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6534/2117/files/tadurajimixexejun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7154/files/92532735795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/tirijanixusamosusirabuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/96516328393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/264203852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/95109790293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/jukoxupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/lipurenejulujudune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/ijazat_aadat_hai_song.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 5

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_off00004744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4744 5396 bytes
SHA-256: 71a7b4ff306c8b58415055cbaa90922b69fc4d7154c792adf72378f0a233c1da
font_01_sfnt_off00005988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5988 6044 bytes
SHA-256: e9a5de6f5f2bb43489e319bd7d64a77cccbf5b6c2864257a2ac59b896a22ff3c
font_02_sfnt_off00006913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6913 9916 bytes
SHA-256: 0c108b718e7fc5cb821f48800a3e19d794396041ffc7df4d8c3ab1874d108b73

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