Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec0baf718394920…

MALICIOUS

PDF

43.9 KB Created: 2020-08-28 16:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22a93d670dedc2bc25e445f11e05915b SHA-1: f2389a6505296f665460a8b25164a243c69ab765 SHA-256: 8ec0baf71839492079f6c89f29e27fbc41ca2b1d59d3d70a381f098b87fc6b50
154 Risk Score

Malware Insights

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

This PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicative of a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=milk+and+honey+rupi+kaur+pages. While the document body contains text related to 'Milk and honey rupi kaur pages', the overwhelming evidence points to a traffic generation or redirection scheme rather than legitimate content.

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=milk+and+honey+rupi+kaur+pages
    • http://files.stereocore.net/uploads/1/3/1/6/131606027/5794696.pdf
    • http://files.southernoiltransport.com/uploads/1/3/2/3/132303312/1268744.pdf
    • http://files.mashath.net/uploads/1/3/1/4/131437701/c9aff104.pdf
    • http://wadez.dawntrygstad.com/uploads/1/3/1/0/131070993/fezores-xotefixaz-pexekaxagazow-zizuxadape.pdf
    • https://cdn.shopify.com/s/files/1/0440/7279/6310/files/31230583375.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7912/files/lobatojawesefifagupenabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7660/files/dokuzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6559/8364/files/9410284356.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/burn_first_aid.pdf
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/pibuzanesunezive.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/11135756324.pdf
    • https://cdn.shopify.com/s/files/1/0430/8097/4490/files/betatron_working.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/digikitubonuvajuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/61565449321.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_off00005f83.bin
985a3b2a24125225227e4b5f143619bbced3b822c41bf47c346764d6d17685b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F83 5196 bytes
font_01_sfnt_off0000711b.bin
4a6656d3760a8847142c939abc0d431dfac8a45d1ff5ab18ce8e4a7f064569b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x711B 10364 bytes
font_02_sfnt_off00009489.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9489 4324 bytes