Malicious PDF — malware analysis report

Static analysis result for SHA-256 905b72f45cccb877…

MALICIOUS

PDF

46.8 KB Created: 2020-08-30 04:22:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f27cca399aa4814c2b77aab07802785a SHA-1: 711c86fb27bdef447b98b61fd80a8917de2ef42a SHA-256: 905b72f45cccb877d283e1c9078e3f68ac2d4dcbc56c20191b79e22bdef548b7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=dugway+geode+beds+map, which is also present in the heuristics and URL list. The presence of a PDF link farm suggests an attempt to distribute malicious content or phishing lures through numerous seemingly benign links, with the primary redirector likely serving as a gateway to the actual payload.

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/wix?keyword=dugway+geode+beds+map
    • https://static.usrfiles.com/ugd/b8c837_d5275f14275f4be9b28eedb7b2fde6de.pdf
    • https://static.usrfiles.com/ugd/97368a_23f30db519094205a32bddd2fa4f506a.pdf
    • https://static.usrfiles.com/ugd/de3d83_1ca7267a5a1b457b812e2d94a6837d0d.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/furoxuvulolimilili.pdf
    • https://cdn.shopify.com/s/files/1/0450/7385/8710/files/wave_accounting_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/dujenosudisagifovugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2248/files/pexazamoxagatagexudomupez.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/19252126245.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/jinujovuxopukumavuneripun.pdf
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/orthographe_d_usage_et_grammaticale.pdf
    • https://cdn.shopify.com/s/files/1/0435/5565/1743/files/19051310344.pdf
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/apostila_de_administrao_pblica_brasileira.pdf
    • https://cdn.shopify.com/s/files/1/0463/2536/6945/files/vodigipesugugivutelopodis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9212/files/75608961553.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/14411621658.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/tulepaxasekej.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_off00006eaa.bin
4f0d729c8c056014b0c4b8198244578dc3e6ef30300429bf002657069d859f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAA 5484 bytes
font_01_sfnt_off0000814f.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814F 1800 bytes
font_02_sfnt_off000089dd.bin
f5acf1a931d4937fb890b4fc99312136645c15b4d85b989a57f1394bb1eb898f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 10616 bytes

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