Malicious PDF — malware analysis report

Static analysis result for SHA-256 986e4c71d4b2cf7e…

MALICIOUS

PDF

34.3 KB Created: 2020-08-18 13:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53956ed7e7f8e679306b80e8c93dd175 SHA-1: 7dd58ef77242bdd1f7e5813743ad91a8ae61b5e8 SHA-256: 986e4c71d4b2cf7e77a4a37826926738be7120493e6bab102461640d9dd170e4
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a download, supported by the 'SE_DOWNLOAD_BUTTON' heuristic. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword suggesting a report submission format. The presence of numerous benign-looking Shopify links suggests a link farm technique to obscure the malicious destination.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=icsi+quarterly+report+submission+format
    • http://files.lechowia.ca/uploads/1/3/1/4/131406592/nufip_mozazukajavi_wugasore.pdf
    • http://femisu.storeoutsideyourdoor.com/uploads/1/3/0/9/130970009/fuzoru-pojowoluloja.pdf
    • http://files.rivernationxc.com/uploads/1/3/2/3/132303009/zametaruvujunaneduke.pdf
    • http://files.intervarsityutah.org/uploads/1/3/2/8/132814050/wuwexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/arabic_calligraphy_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/72396865543.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/pasowawigukobepisowozakar.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/konodeja.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/nissan_sentra_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/beneguridosobekew.pdf
    • https://cdn.shopify.com/s/files/1/0435/7124/9311/files/45447574401.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/semifaderig.pdf
    • https://cdn.shopify.com/s/files/1/0431/6774/4160/files/35753473877.pdf
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/kalejeratakitugajurijeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/vandercook_trumpet_solos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/raditupazureru.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_off000049b5.bin
dc486f07f532bea54e353cf55866327f377cf8cbc538ee1585c7462e116025e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x49B5 5464 bytes
font_01_sfnt_off00005c35.bin
a439c8ce61daba4c13083554f33c2f8257e0d745d66ba2e5eff8c42f284396a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C35 9224 bytes