Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0c0ca581575773…

MALICIOUS

PDF

44.8 KB Created: 2020-09-30 23:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d9ac61e916c995db639bd4957f86a98 SHA-1: 3af72450a9135a13a3bc5429e3dda5c78e6d8608 SHA-256: ae0c0ca581575773ab06e900c3eb6bc099a344331c57664703f3ad2a2bcca62a
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm. One of the primary links, 'https://ggtraff.ru/strik?keyword=marguerite+yourcenar+the+abyss+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to lure users to external, potentially harmful, sites. No scripts were extracted from this sample.

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://ggtraff.ru/strik?keyword=marguerite+yourcenar+the+abyss+pdf
    • http://lemiwos.pttanksoftware.com/uploads/1/3/0/9/130969744/6877642.pdf
    • https://site-1036633.mozfiles.com/files/1036633/satefibaj.pdf
    • https://site-1039299.mozfiles.com/files/1039299/livanuwaxokufuxib.pdf
    • https://site-1037005.mozfiles.com/files/1037005/buvon.pdf
    • http://kiler.darrenellisdance.com/uploads/1/3/2/3/132303382/1947373.pdf
    • http://files.shishisalon.net/uploads/1/3/0/7/130739626/javifiwub.pdf
    • http://files.hrr-poa.com/uploads/1/3/1/6/131637570/6f4e24644c3f.pdf
    • http://kokadub.safesignups.com/uploads/1/3/0/9/130969521/xadalegixonejovop.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/gruber_public_finance_and_public_policy_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/10256027528.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/anoka_county_warrants_phone_number.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_off00007073.bin
34e2f5d1f5a2afcad0bb2c4037044c58bc4383a4d75ace1692d7a9dbb0c3eb70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 5632 bytes
font_01_sfnt_off000083a6.bin
3f6c4c8309b4ae87384b1f8b8516985ca52539cda8c94bfd81480ab69167fb98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 10288 bytes

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