Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d3c7b8159a6cbd…

MALICIOUS

PDF

46.2 KB Created: 2020-08-18 19:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5411e463fd6f38937f87155a61874156 SHA-1: 09fcebc32066d41028bcb3eb9645a360fcc6f2ca SHA-256: 91d3c7b8159a6cbd08707f269c1db44a14fbccdb166098e0b7c492178aed3b91
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing content related to Arabic fonts and Islamic themes.

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.ru/pify?keyword=arabic+font+keyboard In PDF document text
    • http://files.itsnotstreaming.com/uploads/1/3/1/3/131383921/lemufalaxevat-xelafopukuxazap-vixetilaluto-losinijemupi.pdfIn PDF document text
    • http://duluxekep.thoughtprovokingmomentsblog.com/uploads/1/3/0/7/130776644/6980865.pdfIn PDF document text
    • http://files.curielkitchendesigns.co.uk/uploads/1/3/1/8/131856326/f384d4c795948.pdfIn PDF document text
    • http://files.catcaricature.studio/uploads/1/3/1/3/131397950/jowededevamajen-jafugejejomisi.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/1/0437/8784/5790/files/99_names_of_allah_coloring_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6569/9478/files/tic_tac_toe_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26225030347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/old_macdonald_had_a_farm_story_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/jepopatefomure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/archivador_de_documentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/5815401534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/14019192043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/wedekesiwowanavevetarexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/97181880093.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000088cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x88CC 21652 bytes
SHA-256: a5732ff5c86c2729187d34ab5a72ae281d9725151abc146e4aacbc822b9af96f
font_00_sfnt_off000053a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A4 5100 bytes
SHA-256: eb862b97145771919c7a8b969f399828fb4a963fcf37bcb8aa8f7f93d03eeb24
font_01_sfnt_off00006513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6513 10380 bytes
SHA-256: c6009979fddef46aa0bb81c419376611a9dbfbd655aeeaf7ac0057e288bacfc4

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