Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc0a2308e4e96dd…

MALICIOUS

PDF

48.2 KB Created: 2020-08-03 22:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 281f784aff9962b23631b3af710390d6 SHA-1: f1c40b694a81e2d5c99c5672d6472ebfcc3ea028 SHA-256: ccc0a2308e4e96dd4736fee77257cfc6101dd77c400a8c298aa89fcc5705f358
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with multiple Shopify URLs and a primary redirector link to 'ttraff.cc'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the redirector URL and several Shopify URLs, suggesting a lure to download further content. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site.

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.cc/pify?keyword=tendinitis+aquiliana+ejercicios+pdf
    • http://files.dianezuliani.net/uploads/1/3/1/1/131164419/nuwojezotejure-kilerejinumaz-guledenoxaz.pdf
    • http://files.newqueervisions.com/uploads/1/3/1/4/131453284/c31985034ebd278.pdf
    • http://files.shannonhergottart.com/uploads/1/3/2/7/132740637/1a90115fd9.pdf
    • http://files.thesportscourtblog.com/uploads/1/3/0/9/130969357/e55339.pdf
    • http://files.avistonlegion.com/uploads/1/3/1/8/131856212/784f9ab5.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/zuvepivapelugixamosatup.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/lamazuzoxoraxazuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/faposopozaxesakeputov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/discord_js_totoal_messages.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/dl_44_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/dinogefow.pdf
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/endnote_x8_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/67234561377.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/xorav.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/90630123028.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/timonatiwaboluwatemedimad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/sugapupoxutibaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/17431505941.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/
    • https://cdn.shopify.com/s/files/1/0431/6856/3

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dac.bin
a2943f52ef89c5ae0bd958880229b0dc8992cabc829791ccf30b89c3bb2854e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAC 5180 bytes
font_01_sfnt_off00007f4c.bin
a404ec8a70342368487e20a081f76662cc1764c98121e4298609e44716da620d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4C 11132 bytes
font_02_sfnt_off0000a360.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA360 4324 bytes

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