Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dfb7268e566b67…

MALICIOUS

PDF

38.2 KB Created: 2020-08-31 02:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d040133d6de9cd34cee751c71ee23bb SHA-1: e6544177225d5238d3907c5b72a4c1cf238b28a1 SHA-256: 46dfb7268e566b67672bd212d755e8964df50a28e27a83f1c598b4d1da1f4308
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to click the malicious link, which is likely part of a phishing or scam campaign.

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/wix?keyword=%25C3%25B6l%25C3%25BCm+yar%25C4%25B1%25C5%259F%25C4%25B1+3+t%25C3%25BCrk%25C3%25A7e+dublaj+izle+tek+par%25C3%25A7a+youtube
    • https://static.usrfiles.com/ugd/50c35f_2cf127980cc64e0bb705cd913c50f16a.pdf
    • https://static.usrfiles.com/ugd/a1fb72_61eb7546186a46dea99617473279e063.pdf
    • https://static.usrfiles.com/ugd/b8c837_410ac11a24bc4a97b1c6fbf94b111d5f.pdf
    • https://cdn.shopify.com/s/files/1/0435/2573/4552/files/17510659595.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/trabalenguas_de_mapaches.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/meriwoja.pdf
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/calculate_time_difference_in_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/27185898157.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/95789475920.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/galakticos_lol_forma.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e7a4bebcde24c5bb37706e604b3668f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0f4b80d85d444b39ac73b639e11c68e.pdf
    • https://static.usrfiles.com/ugd/f84671_9115b3daa84e440f90edc7fa8a4422a2.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_ba979168612f4181866db862140532d3.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_off000051c3.bin
778a6cd90fac379ac7b3385915c2dae5b3d8deb68880daa635f1a5b3a930d376
pdf-font-stream PDF embedded font (sfnt) at offset 0x51C3 6164 bytes
font_01_sfnt_off00006647.bin
eaa8ee9bbbdd2871b334de3429ec345692f09d7ff8b937da475c5c0aff62c29d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 11020 bytes