Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dcbe1f6a62d686…

MALICIOUS

PDF

46.3 KB Created: 2020-08-03 20:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dbbe25bdb1b40fca4bf844a9901ce44 SHA-1: b9fbd0c985a24072f4e349d7ee60099d891d7ee8 SHA-256: c2dcbe1f6a62d686203d0e5a81715811afd88bdd693575d8e6a327c38dc4cc48
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=boricua+definicion+pdf'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the same URL and text related to 'Boricua definicion pdf', reinforcing the lure. The presence of a large number of external PDF links also suggests a link farm tactic.

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.ru/pify?keyword=boricua+definicion+pdf
    • http://files.freedomdds.com/uploads/1/3/1/3/131379830/sulopepalakanune.pdf
    • http://files.carlabrooksphotography.com/uploads/1/3/0/8/130873820/2314266.pdf
    • http://files.theurronstudio.com/uploads/1/3/1/4/131438557/kovubuvex-xevukawajinu-vixinesilupabox-dinaxex.pdf
    • http://files.themagicalway.com/uploads/1/3/2/7/132741029/rivaju-xikiragaj-megob.pdf
    • http://files.thegreatwines.com/uploads/1/3/0/9/130969835/c1fda23.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/gewurutosufega.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/34242367590.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/66671351540.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/34543820643.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/halfling_ghostwise_5e.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/ati_teas_secrets_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/69589926007.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/fofadagaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/zeluloletesanodezejerirod.pdf
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/91973820009.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/moxakudu.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_off00006a0b.bin
dc9fe31c397188d60af89d6d4fdadbe466b2c7e75808233dc3f7be395b68b574
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 4792 bytes
font_01_sfnt_off00007a5a.bin
2b61bd1d302d9b40e5336c8b8150a978c7af9cd9fb7794d47f1b4ccb515b9fac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 10968 bytes
font_02_sfnt_off00009e3c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3C 4324 bytes