Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc0eead9ad37b89…

MALICIOUS

PDF

47.1 KB Created: 2020-08-16 13:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25ab1f8f439ac56bc7212d8cf7c08040 SHA-1: 3a1d98e2512e987a2163b51be08328c2f601516d SHA-256: fdc0eead9ad37b892e0c86a30bed762985c9435792649c6d9ad9855d4fc925d0
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is further reinforced by the document body containing the same URL and search query. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link.

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.ru/pify?keyword=chandramukhi+movie+songs+free
    • http://files.rayzinktattoo.com.au/uploads/1/3/1/4/131453177/korugiviwujepaseb.pdf
    • http://puralid.fullcirclelivingdyingcollective.com/uploads/1/3/1/6/131606968/4dc61dcc7602.pdf
    • http://kijomeji.highlightminiatures.com/uploads/1/3/2/7/132710621/eed015018e6.pdf
    • http://files.four-lakes-taskforce-mi.com/uploads/1/3/0/7/130775834/979f5252da8b784.pdf
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/aaliyah_aaliyah_album.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9361/files/evacuation_plan_templates.pdf
    • https://cdn.shopify.com/s/files/1/0431/8871/5682/files/romajuluwedutupilan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/80049284081.pdf
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/dovimobatuvikesezetavi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/how_to_answer_the_phone_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0440/9003/2278/files/catalogue_ikea_1999.pdf
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/jefub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/cayuga_county_family_court_forms.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/vonizerufaxukate.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/57645224515.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/chocobo_theme_flute_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/romesafuba.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/1/0436/4288/0160/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007391.bin
b5a982296e2bdee0490497279c04b12299fea8941cdc71c4e1ef46400aa97768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7391 5316 bytes
font_01_sfnt_off0000857b.bin
e9f04d4fc7b2c0791fd9122d99f296787da120d702e0e23dac04a15f26ec319e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 13256 bytes

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