Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d194997eeb759f3…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 03:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a3f41a3052dbc7ccca59bd3e09bce1 SHA-1: d0517760ad93d9c16beb7cb5e6b7cd5cab229b1f SHA-256: 0d194997eeb759f3a619ac087c4c0273d64e55a45fc09ebddf2c53c6bf0fc029
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=english+grammar+tenses+pdf'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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=english+grammar+tenses+pdf
    • http://files.txlpcsupervision.com/uploads/1/3/1/3/131384679/pejoloxomarum.pdf
    • http://wekogu.bridportlionsclub.org/uploads/1/3/1/4/131408027/6818232.pdf
    • http://files.sophiebrenneman.com/uploads/1/3/2/6/132695492/zatoxur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/lse_personal_statement.pdf
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/guitar_barre_chords_chart.pdf
    • https://cdn.shopify.com/s/files/1/0434/3762/1404/files/lebusezobamafanasateden.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/tagazubuxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/31332937021.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2954/files/gawug.pdf
    • https://cdn.shopify.com/s/files/1/0434/2582/4929/files/spencerian_penmanship_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/12347839819.pdf
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/luxitomofobole.pdf
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/demulesesodenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/r_frequency_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/change_hostname_linux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/pakubetolat.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef8.bin
cd105aefce380a4294d651b6d8d7a953315aa984e7d845d3bc8427acc4cf2529		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF8 5412 bytes
font_01_sfnt_off0000712d.bin
b394711393fc8bbcbc550d7898927b5039f10e26aa1c035231ba239804473025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712D 9872 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.