Malicious PDF — malware analysis report

Static analysis result for SHA-256 857f9f59d8028f78…

MALICIOUS

PDF

46.7 KB Created: 2020-08-19 01:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb691dfdce512dc4c163e98bc3f9517b SHA-1: f2e0b4854ca61ec0b2597d94662194cf0252bd68 SHA-256: 857f9f59d8028f789264d643c00d4576e066e9b09f7ae9ad9321744d2c5dc13c
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO-based phishing. The document body and heuristics indicate a lure for movie downloads, which is a common tactic for distributing malware. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=anniyan+full+movie+in+tamil+hd In PDF document text
    • http://kixeke.innovativepossibilities.org/uploads/1/3/1/3/131383314/xixuliromewon_luxemikudenami_mefuxix.pdfIn PDF document text
    • http://files.waynesvillegalleryassociationnc.com/uploads/1/3/1/0/131070216/dobidatilogizo-refigezegepuxig.pdfIn PDF document text
    • http://files.loreleilinklater.com/uploads/1/3/0/7/130775475/dazobetemeso-zupelugedon-babajixijojabe-varorurupav.pdfIn PDF document text
    • http://paluxosa.alpenviro.com/uploads/1/3/2/6/132695742/897443.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/23770938795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/daisy_1894_bb_gun_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/time_in_ms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/dewonubawukigemopitetif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/suromokuxamazotasafezovoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/tenalugokefegaxopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1355/3827/files/fiendish_codex_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2530/0629/files/sonicwall_vpn_client_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/65764494392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000494e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494E 4904 bytes
SHA-256: f150fc3f497e0f82fa8ac2ce8800f9bf2d92cb0991994d63d2673fb5287f1038
font_01_sfnt_off000059d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D7 3128 bytes
SHA-256: b431ecbbac700e8d3e1661e6b1cc43262c9c9f802ba9320404d3d3b5cc4bc4cb
font_02_sfnt_off0000664d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664D 10412 bytes
SHA-256: ba730aa8b07b589f48d07b578c68d5bd3b43e1230160455823d7d39b4ac09754
font_03_sfnt_off00008a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0A 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_04_sfnt_off00009f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378