Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6e9b9214208d97…

MALICIOUS

PDF

54.2 KB Created: 2020-08-09 06:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f9a7d350825775a3d8e96f556213a26 SHA-1: 9550976ca9014614d6d205218ff434a40c2fe3db SHA-256: 1e6e9b9214208d97424c41f8b205e4ac59697679b32f47b3924e777c69206f90
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains text related to calculus problems and the URL for the malicious redirector. This suggests the document is a lure to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting.

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.cc/pify?keyword=differential+calculus+limits+problems+and+solutions+pdf
    • http://files.motherandchildconnection.co.nz/uploads/1/3/1/1/131164424/cf01c4.pdf
    • http://files.lifeinmint.com/uploads/1/3/1/6/131607712/ropikanumite-poxizeparodof.pdf
    • http://files.sailingscribblingandcycling.com/uploads/1/3/1/0/131070590/e1658ab9.pdf
    • http://files.telj.org/uploads/1/3/0/8/130873983/lifag-pejez-telezujuneleb.pdf
    • http://files.alleghenybuilders.com/uploads/1/3/0/7/130739369/a18ff19b1463.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/rujajelawubofepufulub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/39793385632.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/free_auto_repair_invoice.pdf
    • https://cdn.shopify.com/s/files/1/0431/9664/5538/files/green_building_design_construction.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6024/files/functional_training_for_sports.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/xeruput.pdf
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/sunonitojuganekix.pdf
    • https://cdn.shopify.com/s/files/1/0448/5431/3122/files/barack_obama_dreams_from_my_father_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/46223631625.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006712.bin
415d1e599810842e002008f6f31d6641621b4b7812e82eccb8f243bef58e9b67
pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 5320 bytes
font_01_sfnt_off00007902.bin
85b4420ab87e223ce18ed62c6ef9032cc8f07ef6569600916f2232cf6c616de5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7902 14188 bytes
font_02_sfnt_off0000a5ed.bin
ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5ED 16060 bytes
font_03_sfnt_off0000ba81.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA81 4324 bytes