Malicious PDF — malware analysis report

Static analysis result for SHA-256 0823760e0438ac98…

MALICIOUS

PDF

58.1 KB Created: 2020-08-02 14:26:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8198f28c19812fef38b1ea7c9d74a3ed SHA-1: f8cc763ef94def52b3f47b4c9804420d7aff3316 SHA-256: 0823760e0438ac98ce4a47ba71c4b56cbf18083581b6057aa87cc371013fb687
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the phishing and redirection attack pattern.

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=is+protosmasher+safe In PDF document text
    • http://files.rubyannemason.com/uploads/1/3/2/6/132681062/9644593.pdfIn PDF document text
    • http://files.bighammershields.com/uploads/1/3/2/7/132740362/709975.pdfIn PDF document text
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdfIn PDF document text
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdfIn PDF document text
    • http://files.neurothinktank.com/uploads/1/3/1/3/131380482/6783824.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/1/0439/7203/4718/files/5384235466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/xetawobokejopubiradugibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4440/5397/files/jozetanidegadosadogev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/xawukefulupunixod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/horde_leveling_zones_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/logitech_usb_microphones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/besaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/46000992217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/nisafubumefixajexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/82572035057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/60149683385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7758 4680 bytes
SHA-256: 3645621ded0bdaeeed988564b782e1e719fadda3c6f45bff2e552ffe9fdb74ab
font_01_sfnt_off00008728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8728 2884 bytes
SHA-256: 52748491b584814d0f7424ecd7250f412108e3e878caaa2ed4eafb24f964eb7d
font_02_sfnt_off0000932d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 10560 bytes
SHA-256: d5d77c5819d3d056c21c29f315275970826c6c30795b16876637ea299664d1dd
font_03_sfnt_off0000b77e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB77E 16148 bytes
SHA-256: 64f21e55c2f29c6f605e8f9fd96e7f7b34f9b4a26fdc717ddead948457370e3b
font_04_sfnt_off0000cc8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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