Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03ac9b7937b18d2…

MALICIOUS

PDF

67.2 KB Created: 2020-08-08 03:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53f8d42d8b3d5f5bf3bc8025817f653c SHA-1: 086080cc7b9a7425c98edbb0c77f099c05f2ac29 SHA-256: c03ac9b7937b18d2743f0f4c75afc038233b7b06758dfd6958d90e88fecbad3f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector link. This suggests the primary goal is to lure the user to a malicious site, 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=fatty+acid+derivatives+pdf
    • http://zudevi.greensidepublishing.com/uploads/1/3/0/8/130874207/bilonuleje_nisefepavujo_vobopanotepud_pujawusasujoj.pdf
    • http://files.applied-magnetics-shop.com/uploads/1/3/2/8/132815220/be05f.pdf
    • http://files.woonsocketautismbenefit.org/uploads/1/3/1/4/131456012/toxavez-pipan-vubimawilomus-nemenexotobebe.pdf
    • http://wapip.fargomontessori.com/uploads/1/3/2/6/132681504/1129659.pdf
    • http://files.marquisjewelers.com/uploads/1/3/1/3/131383297/3259659.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/furuvujonapelujuziwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/the_art_book_big_ideas_simply_explained.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/que_es_el_acoso_escolar_o_bullying.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/gaguvozederukimorunagos.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/vafipuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/92703596194.pdf
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/gawawaworukelasiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/gabexajisutapog.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/jajukekebasozadelug.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/nijawimexilugikafepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/23280193169.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_off0000b887.bin
9fd593821c5d7522c939dbd6c64d13c3466d5d05a2a2a897685d23c85311237e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB887 4804 bytes
font_01_sfnt_off0000c8ff.bin
3ae3d9c4fdd89dda3f99aa88a90b4efdb427baf0e993e3ef3a71fcf931ffcbd4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FF 12608 bytes
font_02_sfnt_off0000f1c2.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C2 4324 bytes