Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9f5cc4e1e16b04…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 06:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07456fd0032d8a6495b9cd8035dc703c SHA-1: f2194ff34f79924b0589f0294b9c89bd60e8ae86 SHA-256: 9c9f5cc4e1e16b042dc384dba341cef45b0ade421e2e4d47c097b1b9addf52a6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to 'homelite chainsaw manual oiler', suggesting a lure. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links, likely for SEO poisoning or distributing further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=homelite+chainsaw+manual+oiler
    • http://files.terrafuller.com/uploads/1/3/0/7/130739916/pisunumuno.pdf
    • http://wedisexi.thepeacesyndicate.org/uploads/1/3/1/0/131070355/5654a41.pdf
    • http://tupira.angyhall.com/uploads/1/3/1/3/131380600/xivipupo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/perunasekepadewejuvi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/47130062885.pdf
    • https://cdn.shopify.com/s/files/1/0433/7883/5606/files/bunkie_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/7501/8662/files/megoposejofumuwetabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/alejandra_pizarnik_poems.pdf
    • https://cdn.shopify.com/s/files/1/0433/9879/1333/files/bobogekitiso.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/53892609973.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/apc_600va_ups_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/2557998455.pdf
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/beginner_vocabulary_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/xidumobudikipibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3115/8175/files/understanding_and_using_english_grammar_4th_edition_workbook_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ed.bin
1bdf29229e2dc15b1ff114a50a2de2e4ce7283d03bb6c49643f60b59c99d81d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74ED 5092 bytes
font_01_sfnt_off00008620.bin
2568a0dbee7b0168bfacd8d1c4c15e989f0a16fe8c697f68559237820cd6918a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 13616 bytes

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