Malicious PDF — malware analysis report

Static analysis result for SHA-256 532073ab24bc46d2…

MALICIOUS

PDF

45.6 KB Created: 2020-07-27 13:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9de6c78b0c3323cc4e67991242e23ac3 SHA-1: e26f76248b90c364828b0d3107a5b96a0d001e04 SHA-256: 532073ab24bc46d2698ff8fe270600cf9275c0b1bce5b2ed09dc9259a03e5b0b
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is flagged as malicious. It also exhibits characteristics of a PDF link farm, suggesting an attempt to distribute malicious content. The presence of a 'Password-protected archive lure' heuristic indicates that the user might be prompted to download an encrypted file, likely containing a secondary payload. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pify?keyword=student+attendance+management+system+project+report
    • http://files.altrimondifirenze.com/uploads/1/3/0/8/130873717/f1c167b169fbe.pdf
    • http://files.conceivedconcepts.com/uploads/1/3/1/6/131637606/aada46d8f23501b.pdf
    • http://files.centelmedia.biz/uploads/1/3/2/6/132695360/28aee496d305c.pdf
    • http://files.visualeyeslove.com/uploads/1/3/1/0/131069915/52fab.pdf
    • http://files.alison-harper.com/uploads/1/3/1/4/131453124/lodizipebejikel_pewegivul_gupogeg_xebipulejoz.pdf
    • http://files.alison-harper.com/uploads/
    • https://cdn.shopify.com/s/files/1/0431/4130/0375/files/82915262415.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/7779621148.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/17684850173.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenixuraxolitater.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/kivuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0377/2056/files/53422878605.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/47895103318.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/mawozuzuduzu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/lepap.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/wezetokaduzizowiran.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7614/files/23258899468.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/76639940150.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/vomuvu.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_off00007553.bin
ebd5ea28be9ca1ff2bdb98d5b276811e4696bf7128cc645861aa4df0e2d41eb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 5476 bytes
font_01_sfnt_off000087db.bin
9a4fc978363e7a0525d5cacc014f2256a25394dc6be38df79e54e175047fe6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DB 9768 bytes

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