Malicious PDF — malware analysis report

Static analysis result for SHA-256 06741d81d56c6b47…

MALICIOUS

PDF

38.1 KB Created: 2020-08-31 20:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d75386925bd62af21f42afedf63e046 SHA-1: 2a5f6167f1a72eb81ea120af03032c5042af2baa SHA-256: 06741d81d56c6b47e7249e90e6942cdd66d6b89c9485e66ab942b5d50a6d0a47
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, including a critical redirector link to 'https://ttraff.club/wix?keyword=ariens+riding+lawn+mower+parts+manual'. This indicates the document is likely part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution attempt.

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.club/wix?keyword=ariens+riding+lawn+mower+parts+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_4d9a077fd06d433392c193ee7a9845e5.pdf
    • https://static.usrfiles.com/ugd/e02969_c0af14579b7e4ad18d8f1d20e20c23c0.pdf
    • https://static.usrfiles.com/ugd/bd5c68_c16dd3f5699048fb89dd246a13066513.pdf
    • https://static.usrfiles.com/ugd/409ca8_08345da978794dd7a9ac3d7841b27ebb.pdf
    • https://static.usrfiles.com/ugd/eda9ba_b935eb15fd194adc8bd913cf1271c87a.pdf
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/13587534154.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/23236446189.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/zufogorusazipobozanoniwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7504/1435/files/27903712535.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/86143869829.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/debit_voucher_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/lutasazezowufoxuxuvaxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/lesozutomozod.pdf
    • https://static.usrfiles.com/ugd/b8c837_8eafda8cdabe4d9e95f107198542fcfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_26cbeba4ddf04da9969db20fa7e30476.pdf
    • https://static.usrfiles.com/ugd/1df9ea_326099287b034d79b79fca2b93d83700.pdf
    • https://static.usrfiles.com/ugd/9e53d4_2fe832361b4742c9997e6f8a2e46b120.pdf
    • https://static.usrfiles.com/ugd/ca300b_56ce681c8f904f578730ccbade53308b.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_off000056cc.bin
96a0b0e59443b1817d4c9ca7a0387e1cb2045b25896237a46873dd60fb5280f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CC 5360 bytes
font_01_sfnt_off00006901.bin
1290462976441d72998eb08a2f9d5a1612fb703abc3febeacb63c42e6dd7b92b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 9992 bytes

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