Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f494d71a3edaf1…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 04:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ddd8f9a34a6026f4d469409e228469 SHA-1: 78623cd838896a33a683e542ee4a52e335a0aa77 SHA-256: b8f494d71a3edaf19d402fa64c52294c6f0247410bfe88037ed085f694892135
140 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=nj+st-+3+form+pdf
    • http://tefof.buttercupbakerymb.com/uploads/1/3/1/4/131406202/rosivome_ginekabadasevog.pdf
    • http://xibemu.biglevel.net/uploads/1/3/1/4/131408024/1982604.pdf
    • http://files.freshegggraphics.com/uploads/1/3/2/7/132712080/rozemede.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/sony_explode_car_stereo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/75136694188.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munununexarusod.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/dijuvezuvosepujadowele.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/vevutiliramabidivapodu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/viluxinoxulupozekivobatif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/nedipusike.pdf
    • https://cdn.shopify.com/s/files/1/0441/1306/8184/files/wojemexitemexoguvupefol.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/celebrate_recovery_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/nuvaxoso.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_off000061ec.bin
42d1f1da271ec56fe1092bfda554e88122c7b709698228e8ee0747dc851b5f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 5184 bytes
font_01_sfnt_off00007390.bin
1f34d8c13d991a210308151377d328a24f9118bd90503fa994e6641332d1d8fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 10364 bytes

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