Malicious PDF — malware analysis report

Static analysis result for SHA-256 02171f3dd7af0df8…

MALICIOUS

PDF

50.8 KB Created: 2020-08-19 00:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b4947adbec1671e7a696fcb9db9154 SHA-1: 226f71ac853aeeac75ec6e3d8ca0e43264c92d5d SHA-256: 02171f3dd7af0df8b3fad8810ce7e1fa2dad9aadf2d7b4ae5e457588797f9b2b
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking Shopify URL, suggesting an attempt to lure users to malicious content. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=m+s+word+2007+questions+and+answers
    • http://laneka.womenforearth.org/uploads/1/3/0/7/130738720/8472892.pdf
    • http://files.tcnorthwestbaseball.com/uploads/1/3/1/6/131606056/dotigamapijomesivom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/namizumagogiwemeveb.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/88627442638.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/bhagavad_gita_malayalam_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/qualcomm_atheros_ar9485.pdf
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/robikezelafakopiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/pofugewefekazeve.pdf
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/domesanudalikakobinej.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/three_days_grace_setlist.pdf
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/kilo_to_lb.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/43589638405.pdf
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/76677596416.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/likert_scale_data_analysis_example.pdf
    • https://cdn.shopify.com/s/files/1/0450/9528/8984/files/camtv_dish_network.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/22736120140.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079ad.bin
8e821e6bfab5b796b1a5dcd5b3e1b6f730c70d86db351bc622c5743f96478c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 5248 bytes
font_01_sfnt_off00008ba7.bin
2fec559b8cf30dab9dbfc5332b7d891a4c318e714bebb942a2d5d35e95cd80e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10824 bytes
font_02_sfnt_off0000afb0.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB0 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.