Malicious PDF — malware analysis report

Static analysis result for SHA-256 0960fcb5f968af81…

MALICIOUS

PDF

49.2 KB Created: 2020-08-24 22:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbc0edbaac8f34a8d4a0354d65893fea SHA-1: 33385b6e6217f1dae65b7795fcfadddf006cf246 SHA-256: 0960fcb5f968af81fb1021e7fc75da338bb8bcdc16df98e3fc69ee6f040877a6
154 Risk Score

Malware Insights

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

The PDF was identified as malicious by an ML classifier and contains a high number of embedded links, many pointing to external PDFs. One of these links, https://ttraff.ru/pify?keyword=boating+hd+marine+lakes+mod+apk, is flagged as a known malicious redirector. The document body contains obfuscated text and embedded URLs, suggesting an attempt to disguise malicious activity. No scripts were extracted, but the overall structure indicates a likely attempt to lure users to malicious content or manipulate search engine results.

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=boating+hd+marine+lakes+mod+apk
    • http://lamamer.starislandpuppies.com/uploads/1/3/2/6/132681352/2427829.pdf
    • http://files.sanpedroleasing.com/uploads/1/3/2/6/132682142/tefewiwatuje.pdf
    • http://files.hugapugaz.com/uploads/1/3/1/3/131379732/d442e20da.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/75370111210.pdf
    • https://cdn.shopify.com/s/files/1/0440/7037/1493/files/books_to_learn_spanish_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/7560500836.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/lp_bronkitis_kronis.pdf
    • https://cdn.shopify.com/s/files/1/0440/8596/9048/files/dupupulenuvagoxizaxesavij.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/jibisojit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/page_replacement_algorithms_examples.pdf
    • https://cdn.shopify.com/s/files/1/0437/9036/8929/files/frederick_copleston_history_of_philosophy_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/music_cd_audio_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/lusik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/kanemifokaxoxinasudu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/80780496111.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/tuxedowujemovonape.pdf
    • https://cdn.shopify.com/s/files/1/0435/4952/4127/files/zutawisenad.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/najone.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_off000074f4.bin
8f06524e151654225b0d211d956e43db33673d897f02db4fe93007c0ec7c74e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F4 5488 bytes
font_01_sfnt_off00008765.bin
472728704195243ecd44f94f700486f347430f58d0240528f58db6017b03fccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8765 15460 bytes

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