Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e420aded47920a5…

MALICIOUS

PDF

42.9 KB Created: 2020-08-28 02:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd7d31cfaf283801a5e9e12a8163c0ef SHA-1: c1f98090c9d9eca515d7fabbc027667b00aff58f SHA-256: 1e420aded47920a502f0aaccb07f729244cfa04395bdbd8cbd28985f5684b3c6
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one critical heuristic flagging it as a malicious redirector and another as a link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=weeknd+trilogy+torrent', which likely serves as a gateway to further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct payload execution.

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=weeknd+trilogy+torrent
    • http://files.aliveaccelerator.com/uploads/1/3/2/3/132303337/133520.pdf
    • http://fugusuma.rathcorschool.com/uploads/1/3/0/8/130874277/4785815.pdf
    • http://mexijo.jmbensikdesign.com/uploads/1/3/1/0/131071164/9511909a.pdf
    • http://xotekim.pennimanarchitects.com/uploads/1/3/1/4/131407406/8927f62251733c1.pdf
    • http://files.buildingbrilliantmindsonline.com/uploads/1/3/0/7/130776341/tinataxigowefed.pdf
    • https://cdn.shopify.com/s/files/1/0465/5241/6414/files/nitakoxogariletelulamex.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/tps_report.pdf
    • https://cdn.shopify.com/s/files/1/0463/3837/5842/files/sobijowijakukifesiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/selavadusajedomexaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/rilisetoditog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/57627885077.pdf
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/wenefovus.pdf
    • https://cdn.shopify.com/s/files/1/0440/4396/0485/files/sukinamul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/62328266563.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/gomipixomun.pdf
    • https://cdn.shopify.com/s/files/1/0440/2423/4149/files/merobaxoxav.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_off0000623f.bin
89aa6842493539005a92b8692984fa64d5e118513623e045ed316baeb013b4f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 4784 bytes
font_01_sfnt_off000072ac.bin
261ea5c66bab8a8fc9d39fa49f35eb60e87013a9f4dd74e01d4dc89c0bd45b3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x72AC 14324 bytes