Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4ca33e112813f3…

MALICIOUS

PDF

47.9 KB Created: 2020-09-01 09:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32f65ee5de29f8f4f8dcdeac8fbe13c8 SHA-1: 096f0c6c43fe55b3fd99e3f168411f9462982211 SHA-256: 1d4ca33e112813f31820e201216424a205a855e2f4ab260f9e5691f075847b35
152 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.com, which is disguised with keywords related to 'Tamil latest hd movies websites'. This suggests a phishing or scam attempt. The document body, though heavily obfuscated, also contains the malicious URL. The presence of numerous links to Shopify and static.usrfiles.com, while marked as benign, indicates a link farm strategy to obscure the primary malicious destination.

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.com/wix?keyword=tamil+latest+hd+movies++websites
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/brazil_2018_world_cup_lineup_formation.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/zuvejonefojoxajal.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5623/files/gubozipofobeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://static.usrfiles.com/ugd/d4579c_f378fb11f7f34ddf9869814b2d9f6b83.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1c7bc2589ff442eaeb0f013c4b53601.pdf
    • https://static.usrfiles.com/ugd/4b874d_505f01f9150c4a5792bd013f4e72eb58.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4699/files/dichotomous_key_template_for_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/stihl_032_av_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/xipefapimelibuguvibajunew.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6006/files/vifotutugigepakubuzej.pdf
    • https://cdn.shopify.com/s/files/1/0439/7747/4206/files/lefodelaresukadititisedor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a4.bin
4a333ccfbbc3687c8c87532028036663bfd9f86f72d2558f5511b174d799f174
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A4 4892 bytes
font_01_sfnt_off0000815d.bin
77ff81f7454a8192f9bac8b60df7aefef11a1b5b4d398d29b21839f1e765e79e
pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 10316 bytes
font_02_sfnt_off0000a4bf.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4BF 4324 bytes