Malicious PDF — malware analysis report

Static analysis result for SHA-256 6499b2b0db84c97a…

MALICIOUS

PDF

55.9 KB Created: 2020-09-06 12:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e843d63b15bfbcc3a297b8e29cd7113 SHA-1: 9ae0164f86abf8749a88998266f5546d175cbd8e SHA-256: 6499b2b0db84c97afde75beb39b1ab8d20ba937c4c9ba40983ea443c83715d05
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, 'https://ttraff.link/wix?keyword=google+chrome++pc+filehippo', is identified as a redirector to malicious infrastructure. This suggests the document is designed to funnel users to potentially harmful content, likely for phishing or malware distribution.

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.link/wix?keyword=google+chrome++pc+filehippo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/5649/5769/files/46259104687.pdf
    • https://cdn.shopify.com/s/files/1/0439/6200/7710/files/magic_call_app_jio_phone_mein.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/15353697922.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/51849082408.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2045/files/billiards_rules.pdf
    • https://static.usrfiles.com/ugd/3f8d85_c3c861ecef6e497c8f0b771ebfd3e730.pdf
    • https://static.usrfiles.com/ugd/197ed4_02bdd18d777043e9a4912803c36dcae6.pdf
    • https://static.usrfiles.com/ugd/2072cd_547babe79e0848fea41928001271f954.pdf
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/selusumoburovazenil.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/73913855769.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5452/files/through_it_all_charlie_puth_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/26481180657.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/rafusopibabilape.pdf
    • https://static.usrfiles.com/ugd/d01287_f21ba86b860442eb90f94ed497814da2.pdf
    • https://static.usrfiles.com/ugd/85d67f_544e1ef3580446fcba39a0c5a37db9c8.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_d0ef0cad75b3459083cbbb59f412d106.pdf
    • https://static.usrfiles.com/ugd/764aaa_c67dad8ae62e4234a37c6423234adac1.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082ea.bin
6d4818184ec535eda67ad32a0588e1ada886e0e4b5fd6b48eeb7b26caad32769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82EA 4676 bytes
font_01_sfnt_off000092c4.bin
3dfe1c14eaf91b89e721d825d6bf66d9112c62e1643672cac8ec20115429d4a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C4 2972 bytes
font_02_sfnt_off00009f51.bin
d7f3f4799c9dd666944a6a033ffbb4d9a0f4a5952030e118a3a83d7e456d6f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F51 10788 bytes
font_03_sfnt_off0000c44a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC44A 4324 bytes

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