Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69c5e4db907f8c3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-16 15:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa2b972dd55c77a2cabaf5b437da5637 SHA-1: 4876ec21e467dae52b9544076bba42f17ed78206 SHA-256: e69c5e4db907f8c30b60a4c68a0e47ca4084390784a849db05f8b7b75e7a33c1
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a notification about deprecated Android development features. The document also functions as a link farm, directing users to numerous other PDFs hosted on various domains, likely to manipulate search engine results or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=notificationcompat.+builder+deprecated+android
    • http://jobemelaw.grimbuilders.com/uploads/1/3/0/8/130813765/nivow.pdf
    • http://tabaxeb.reginalopez.net/uploads/1/3/0/8/130814328/jusibozulozarika.pdf
    • http://files.nnrpdp.com/uploads/1/3/0/8/130874102/58c5e66c3006e.pdf
    • https://cdn.shopify.co
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/28795057363.pdf
    • https://cdn.shopify.com/s/files/1/0438/0773/5969/files/marriage_life_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/98203438887.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/99086389871.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/conference_badge_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/b._sc_2nd_year_chemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/10789850068.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9797/files/new_bollywood_movies_hd_filmyzilla.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/wifiwomoxepokanixafid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2650/files/wetamomuresexejosivobup.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/dudegekaxuzoju.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006278.bin
8052d7c5ac54b16b4872567f39dd8affc1cadad63df28e81b7d39479c375bf08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 5264 bytes
font_01_sfnt_off0000744a.bin
e5f3e2802fabdb81940adb929539fd2f8c4c87d7a7d0203939ee37ee3a2f429b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 10468 bytes

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