Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19d16860e6ba3e8…

MALICIOUS

PDF

173.3 KB Created: 2020-08-13 17:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77789c2d94d7d2cfb93f5a1edb9246f7 SHA-1: 1b60ac33dbb967a4b29c25f679db7e59efe610c7 SHA-256: f19d16860e6ba3e80496b484f1858ea354f138de9fab56db1cb0d481a07c3a27
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL 'https://ttraff.ru/wb?keyword=incucyte%20s3%20manual' is flagged as malicious. This suggests the document's primary purpose is to lure the user to this external site, likely for phishing or to download further malicious content. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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/wb?keyword=incucyte%20s3%20manual In PDF document text
    • http://kewujo.nepcsa.org/uploads/1/3/1/8/131857631/zedokivavexeledu.pdfIn PDF document text
    • http://pekukemam.yangoninternationalchurch.org/uploads/1/3/1/4/131453540/2423863.pdfIn PDF document text
    • http://nameg.solaris7roadshow.com/uploads/1/3/0/7/130776891/a6ee3ad6b95736.pdfIn PDF document text
    • http://files.relationalintegration.org/uploads/1/3/1/8/131871642/7042929.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/acoustic_response_series_707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/rozexiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/lemodexuzewavemufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9083/6645/files/jujesokove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3727/7855/files/mapegamagofiromox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56325204281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/nasekobozonoxijop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/reverse_string_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/11143016865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/juvowemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/waxelotapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38461358607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/30739847392.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 7

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_off00025cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25CC2 4776 bytes
SHA-256: 57a055284ad9d3a0abc49572a972eba6230abd97edb0d45430c813d9a43aa517
font_01_sfnt_off00026ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26CE0 13528 bytes
SHA-256: b15f3b05837f07e3252e1e16c07751c5f3ee76851f74b48244e4b89c5a20eaa3
font_02_sfnt_off000297f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x297F8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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