Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb13e5c591e82c38…

MALICIOUS

PDF

48.9 KB Created: 2020-08-09 08:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f126291d403c909a8d3ef2d4ca58999 SHA-1: a4f2ae11276d3eb9a2aeac1129e074c651aa09fc SHA-256: cb13e5c591e82c38d2b9b166f0d568b35b69a69c496951c5781bf3357fec4276
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to click on these links, which likely leads to a phishing page or malware download. The document body contains the malicious URL and several benign-looking Shopify URLs, suggesting a link farm or redirection strategy.

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.com/pify?keyword=destination+b2+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B1%25D0%25B5%25D1%2581%25D0%25BF%25D0%25BB%25D0%25B0%25D1%2582%25D0%25BD%25D0%25BE+pdf
    • http://files.alsybor.com/uploads/1/3/0/8/130814411/fupemusevo_mopagatid_tebuwav.pdf
    • http://zaroku.itsawonderfullifestyle.com/uploads/1/3/1/8/131856743/92fa40c.pdf
    • http://files.raisingmediators.com/uploads/1/3/1/3/131398424/wikowomovuwexop.pdf
    • http://files.coxautoroadtrip.org/uploads/1/3/0/7/130739238/pisotusomudito_lafoterevexoni_gojipe_titakubusimiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/kakodojikowota.pdf
    • https://cdn.shopify.com/s/files/1/0437/0389/4171/files/sovejemedafope.pdf
    • https://cdn.shopify.com/s/files/1/0431/6977/5782/files/telebevirosalanidirep.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/pekesizerefuxobetaruvoxes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/48990113732.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/kawusirikeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/11178131459.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4285/files/31486249336.pdf
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/botej.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/22695225046.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/94074088100.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/autoformation_windev_20.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/fokikixebede.pdf
    • https://cdn.shopify.com/s/files/1/0436/0405/0084/files/60644206227.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_off00006e75.bin
f5a8a421b6e6db3b74c0658257edfc0d3b3fbf0127c7c9ba2aa26346655afc34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E75 6408 bytes
font_01_sfnt_off00008336.bin
066577722894bd8305be22bae021a5e2d62995db5d073dfc5e510a46dbffea7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8336 15768 bytes

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