Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fc09e88ac74e13…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 05:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bae5f2285dbca0d54df018141add4449 SHA-1: ab6bf08baab563a8b86a08695a53709389168759 SHA-256: 60fc09e88ac74e131c7cb4224f33b95931a442eca4937edab027278774eb7961
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=analysing+quantitative+data+pdf', which is flagged as malicious. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links.

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=analysing+quantitative+data+pdf
    • http://files.revbarryking.com/uploads/1/3/0/7/130775952/sidozo_nomoko_miwadexemovaxes.pdf
    • http://files.gelaboutique.com/uploads/1/3/0/7/130776002/4812327.pdf
    • http://files.giscnr.com/uploads/1/3/0/7/130739996/60ec69ef.pdf
    • http://files.enderbypreschool.org/uploads/1/3/1/4/131453645/4b01799edc3e20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/vizijuzafikunirifi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/toro_824_snowblower.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/wuzovijisasawumize.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/ipad_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/8000762031.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/7427828153.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/bomebide.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/10991834438.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/xifiwekik.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_off00006669.bin
10c16e18bb975bb6285a4de595b98a61c98d5a5b77a3559f55a695ae8d32ba90
pdf-font-stream PDF embedded font (sfnt) at offset 0x6669 5392 bytes
font_01_sfnt_off000078e3.bin
7443754f99cb4e65dfd7ff9fa08619f64b42a4375de82de9d652e2d3e59b7984
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E3 10228 bytes