Malicious PDF — malware analysis report

Static analysis result for SHA-256 4723009dbc421c68…

MALICIOUS

PDF

50.7 KB Created: 2020-08-03 10:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59ea36be567782ad526554c495cf02a3 SHA-1: 8406758b753c0d8986ff041347eefaaa8294cb42 SHA-256: 4723009dbc421c6831e5201d923efad3192f7a025877829fb6cc5bb84149256e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be the same redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or traffic generation.

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.com/wb?keyword=c%20programming%20language%20full%20course%20pdf
    • http://files.mastervedicastrology.com/uploads/1/3/1/4/131437311/gedasoxugutitidatawo.pdf
    • http://reper.crathesdrumoakdurriscc.org/uploads/1/3/0/7/130775840/4ea53882.pdf
    • http://files.sportsimagephoto.com/uploads/1/3/1/3/131379899/2090814.pdf
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://files.shopgrayinspired.com/uploads/1/3/1/3/131397950/472480.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/35690541131.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/45984029985.pdf
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/webinigogikodufamiziva.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/71982693992.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/patabudotaxavajexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/16991452692.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/90300647149.pdf
    • https://cdn.shopify.com/s/files/1/0429/2870/1603/files/zetovebojag.pdf
    • https://cdn.shopify.com/s/files/1/0438/0835/8561/files/john_deere_sabre_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/wiposufikulera.pdf
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/tebazudubefene.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/53963208717.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/nezafi.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_off00008623.bin
bb4df839474dca63119af1c1227cf5e43eb80b26d51446c5d628950d79367243
pdf-font-stream PDF embedded font (sfnt) at offset 0x8623 5380 bytes
font_01_sfnt_off00009859.bin
94f442c449bbde5bbdc1d71d3af765b52a5c8121b2601df06cc4f7565a4df795
pdf-font-stream PDF embedded font (sfnt) at offset 0x9859 10972 bytes