Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab92bcbb240df208…

MALICIOUS

PDF

51.4 KB Created: 2020-08-19 00:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977b73863a7b6f1a267a05e7918ec0bb SHA-1: 209dff071e831d785172bfb59cdae8a6920cf162 SHA-256: ab92bcbb240df208491c2ef86a665f2c01efe5167797fa7b32b74f84d00df9b3
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=consumer+reports+black+friday+tv'. The document body, though partially corrupted, contains this URL along with other Shopify URLs, suggesting a link farm or redirection strategy. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=consumer+reports+black+friday+tv
    • http://jonomew.lexverse.com/uploads/1/3/1/3/131379541/ziwirefof.pdf
    • http://files.myabigails.com/uploads/1/3/1/6/131636965/1f5b71354bb5.pdf
    • http://liram.acharlotteweddingminister.com/uploads/1/3/1/6/131606027/6443582.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/satujegonupuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/6271903154.pdf
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/lubegulolategidovevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/94159548339.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/gatunogotemefibuvosetune.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/lijisusa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/banking_service_chronicle_june_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/gizepuxegisuxexaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/suvukubakijovigidedek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/josogoxujopufudejutudimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/adolescent_social_development.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/midedik.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_off00008169.bin
c512cfc5bea9d0e8c1c0d2ae5a875f331d37bd548818d206ca17cfb18fba94bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8169 5572 bytes
font_01_sfnt_off0000943e.bin
80a4cfd859b9bb1e8faa36d0b2de836cd4647eeb869bd113d8e2047271df502c
pdf-font-stream PDF embedded font (sfnt) at offset 0x943E 1912 bytes
font_02_sfnt_off00009d6d.bin
398fbef1fced1a0128040787a6622317ea6f03739a1e17743f35a3e18bbf14d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6D 10248 bytes