Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7726fb591f1f52…

MALICIOUS

PDF

40.3 KB Created: 2020-08-07 03:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 352f9e9d0a60c7c2b997c2ba29a0b3a4 SHA-1: 5eaecb9ca2f2cc5b6e25c5f54fce8e67147e26cc SHA-256: 7c7726fb591f1f52ba6c882fd15593d19f008638071888e2381e315ae9bdf286
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=anthony+giddens+pdf+download', suggesting a lure for a PDF download that leads to malicious infrastructure. The ML classifier also strongly indicated 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=anthony+giddens+pdf+download
    • http://files.hilmarffa.com/uploads/1/3/1/8/131856706/8fd83ba5959.pdf
    • http://files.saintsandsavagespowerlifting.com/uploads/1/3/2/7/132710795/rebakuw-rulobise-dewozo.pdf
    • http://files.royalengineers.org/uploads/1/3/1/8/131857120/2e45d08.pdf
    • http://files.multipleconstruction.com/uploads/1/3/1/4/131453432/0afc297.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/jipifasema.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/wendy_s_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/4196/2649/files/50916220441.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/42421908063.pdf
    • https://cdn.shopify.com/s/files/1/0437/5373/4298/files/65306483470.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/22479747490.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5333/files/dexuriteto.pdf
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/75084201028.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/winuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/budapest_walking_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/55039828581.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/selirasibano.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/wordpress_comments_template.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_off0000512a.bin
1d610d29db74494fdd93b18fed341fbf1e6a2542aaae6aca37e9f1085f2cb974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x512A 5180 bytes
font_01_sfnt_off000062e3.bin
4e614d20679b9f45f1a785d76fd421b0cb9f83d05c51f5534903237c162d6f02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 10324 bytes
font_02_sfnt_off00008600.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8600 4324 bytes

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