Malicious PDF — malware analysis report

Static analysis result for SHA-256 51a06536fdc460fa…

MALICIOUS

PDF

61.4 KB Created: 2020-09-11 05:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23b3c01bc31abf6772f71e47596d1a12 SHA-1: 063f9ca0f03e7240cc0215863bbe21e63658b77a SHA-256: 51a06536fdc460fa529ae6467f7526136afb0389b14de60740d92a0a0bdc83a5
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Channel 2 news reporters buffalo ny' and a URL that appears to be part of a lure. The presence of a malicious redirector URL suggests the document is designed to lead the user to a malicious site, likely for an advance-fee scam as indicated by another heuristic.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.link/wix?keyword=channel+2+news+reporters+buffalo+ny
    • http://files.sofiebal.com/uploads/1/3/1/0/131070294/cb805be8a062c29.pdf
    • http://files.stdavidsashburton.org/uploads/1/3/1/3/131381518/fumifevexogatipafif.pdf
    • http://files.uoft-regenerationlab.com/uploads/1/3/0/8/130815026/5081355.pdf
    • http://files.theyarnandi.com/uploads/1/3/1/3/131380558/zokatiruwup.pdf
    • http://bolejalo.thaiconsultingfirm.com/uploads/1/3/1/1/131164250/supisonova.pdf
    • https://cdn.shopify.com/s/files/1/0432/0981/8272/files/mawaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/bopuzebesu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0071/5674/files/17134354996.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/73081312310.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/jujedareja.pdf
    • https://static.usrfiles.com/ugd/221eaa_38794c5983c04b78bf8c2bc5ce54bfb8.pdf
    • https://static.usrfiles.com/ugd/e2c250_e09d0255789742e496fb5fd3ce55a6f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f00786febb774dfcb39f79a1bc40f0bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_00ac2152761240e398918aa13ab26671.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd78d30831c44b54afee094af1d5ca48.pdf
    • https://static.usrfiles.com/ugd/89064d_a5284baf79ad418092a25417c215c3fa.pdf
    • https://static.usrfiles.com/ugd/63d3ad_f7775f5290294980b8e4c7ddba660e06.pdf
    • https://static.usrfiles.com/ugd/d017d5_b27bfaaf1d224e06afe231a83b5c92d6.pdf
    • https://static.usrfiles.com/ugd/429b25_5fd03dce94a84c13a39f19bcf9796611.pdf
    • https://static.usrfiles.com/ugd/227d0f_57ba1bd1878b4402b879b852047cb375.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_off0000b0ce.bin
1237450692fb8dd507d0b78446c5f27b7f82f1d6d90600f2c7b596f9bde77058		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CE 5360 bytes
font_01_sfnt_off0000c316.bin
b1b64d1b5027319163219a9de915f793a9d27b762f2b7523b6311d0aebf52596		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC316 10892 bytes

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