Malicious PDF — malware analysis report

Static analysis result for SHA-256 78db172fed596666…

MALICIOUS

PDF

34.4 KB Created: 2020-08-18 17:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00fd1ba9e946520478835543fdc0bbee SHA-1: a958221c4e70f17f8e782567438079d41ecc2a44 SHA-256: 78db172fed596666e0700c8e40862c39c7158b99deb7e7c68dce477916070c53
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, including one pointing to a known malicious redirector, ttraff.com. The document body, though obfuscated, contains text related to a 'Casio fx991es plus manual pdf' and the URL for the redirector, suggesting a lure for phishing or malware download. The presence of a link farm and redirector indicates an attempt to obscure the final malicious destination.

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.com/pify?keyword=casio+fx991es+plus+manual+pdf In PDF document text
    • http://files.capoeira-aca.com/uploads/1/3/1/3/131384071/niled-lesisowesipo-laxijeviva.pdfIn PDF document text
    • http://files.mantra-translate.org/uploads/1/3/1/4/131413905/vuzovukorowa.pdfIn PDF document text
    • http://files.michaeljohnmccarthy.com/uploads/1/3/1/3/131383386/f8de7f0f7cf7.pdfIn PDF document text
    • http://files.welcomeneighborpa.com/uploads/1/3/1/4/131437005/dedurubavokinibujok.pdfIn PDF document text
    • http://pexosovux.juliesstory.org/uploads/1/3/2/8/132815002/2373444.pdfIn PDF document text
    • http://edu.casio.comCASIOIn 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/1/0433/6130/4728/files/wedetavuwudegevolugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0566/5703/files/jaberetozub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugomedimugatusigoxafif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/bilurixatulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4192/files/dch_file_ting_nht_sang_ting_vit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/66620051278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/xagokirawebomemalajixiwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/kyodai_mah_jongg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6312/3874/files/ruvaxoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/free_hal_leonard_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/holt_mcdougal_ancient_civilizations_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/wovemedokofin.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_off000048f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F8 5272 bytes
SHA-256: fcb7e963fd5e9bc95f3564a9e976d08e68df0299674ce7e3359d977e764f0a62
font_01_sfnt_off00005adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADF 9928 bytes
SHA-256: 7ee572c057f6682abc9497329d691df54b2a9b3ffd8aaf1b9e610ee8e1208e09

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