Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e1488a48a06eab…

MALICIOUS

PDF

36.8 KB Created: 2020-08-03 22:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c098497786272311e3adc7ccd33acbbf SHA-1: 9e55ece05609e0637245cb8e7e8309db83d15038 SHA-256: 49e1488a48a06eab749813222e3f5f26f14b437b13961639c10fa36354611106
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to PDF conversion and a call-to-action phrase, suggesting a lure for users to click the malicious link. The presence of a 'download button' heuristic further supports this attack pattern. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chuyen+doi+pdf+sang+jpg+online In PDF document text
    • http://files.danjapolitis.com/uploads/1/3/2/6/132681144/646556.pdfIn PDF document text
    • http://files.mrsmccormick.com/uploads/1/3/2/8/132816195/kogaxosulajuwidovib.pdfIn PDF document text
    • http://files.redpegecostudio.com/uploads/1/3/1/8/131871642/2802491.pdfIn PDF document text
    • http://files.marshallilchamber.com/uploads/1/3/1/8/131871501/pomakevozise.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/1/0431/8619/2546/files/zomowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/zubedumawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/2766620955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/apgar_familiar_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7134/0698/files/vilefumeras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/gexomenipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/mejarufezitolivuvodod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/75812099668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/fafogumugasutalanemupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1781/3661/files/77793501628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puxatofutedixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/5th_edition_dmg.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_off0000514c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514C 5288 bytes
SHA-256: 6d294eb810b466ab659c82c6f7a08eb70643cab83a9df19bd7685a46d0dfdcbd
font_01_sfnt_off0000635c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 10592 bytes
SHA-256: f16950b95740a1a02cbcba40f318e90b1d4354f1b6846227f64e1155f53ebc9d

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