Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86fd2bda8c9e477…

MALICIOUS

PDF

61.2 KB Created: 2020-08-04 13:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8444d16de9204fcddc90b4332bc2d24e SHA-1: 693bf7827bfc47d0f70bfefec2f298ceb2d660ee SHA-256: d86fd2bda8c9e4771c2393c00434008b8c2ed1e2a1ab30b3a382c92e9416659b
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 pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for 'B. sc 2nd year chemistry notes pdf'. The primary attack vector is likely a user clicking the malicious link embedded within the document, leading to further compromise. No scripts were extracted from this sample.

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.com/pify?keyword=b.+sc+2nd+year+chemistry+notes+pdf
    • http://files.swanleeartdesign.com/uploads/1/3/0/7/130738799/8a68ae8.pdf
    • http://files.craftpixie.co.uk/uploads/1/3/0/7/130740412/pawogolitibafi.pdf
    • http://files.stephenlotus.com/uploads/1/3/0/7/130739601/2297693.pdf
    • http://files.sweetnelsons.com/uploads/1/3/1/4/131406258/402c292be8f364.pdf
    • http://files.downrivermodelarestorers.com/uploads/1/3/2/8/132814342/6212874.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/mexelejimoxomatowe.pdf
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/pagenusigoneb.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/zejomev.pdf
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/48827316902.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/19506219878.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/tobopodavigexekoguvu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/dupofuwobisifazudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/papop.pdf
    • https://cdn.shopify.com/s/files/1/0438/5118/6336/files/88960173796.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/2199778152.pdf
    • https://cdn.shopify.com/s/files/1/0440/8980/2904/files/81585724362.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/gebutikuzagoxaxetuluru.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/guruwajevavolikipub.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/somixuraze.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008370.bin
8117328fd3b349c1e6770228bbf3f809d248c613cce63ab1f6123c0595d447cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8370 5680 bytes
font_01_sfnt_off000096ac.bin
a0f5a8dfeaa0bb6dc0effbaf73f2996d6fa971a09dbb121d521afc971fdcd47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AC 3204 bytes
font_02_sfnt_off0000a39f.bin
5e067315a2bd9524b6254977960f062bb129990ed69868068e29b4596197f3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA39F 2320 bytes
font_03_sfnt_off0000adf2.bin
b95ce5290a0cf82e3af2e549c2e4b7c428585584facbab55b8ce0f2574640c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADF2 10144 bytes
font_04_sfnt_off0000d0a5.bin
a349519ccbdbca3d75704c2becf615ab37801eb1543272228454131dceb83acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A5 16224 bytes

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