Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e8903e785f75a2…

MALICIOUS

PDF

61.9 KB Created: 2020-08-18 22:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 320a842e8b85bb0f7aa97aa86305cc61 SHA-1: 93594722efc4a02d6269456fd15d029bc447c9f1 SHA-256: 98e8903e785f75a2577fceb1b21014c6d52a88fca0ff33b1221633435c6cb2b8
128 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Faizabad university ma private form 2019' and includes a critical heuristic firing for a malicious redirector link. The document body also contains multiple embedded URLs, including a primary malicious redirector and a large number of links hosted on cdn.shopify.com, suggesting a link farm for SEO poisoning or distribution. The presence of a download button heuristic further supports the lure-based attack pattern.

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.ru/pify?keyword=faizabad+university+ma+private+form+2019
    • http://files.yoloenergywatch.org/uploads/1/3/2/8/132814990/3359957.pdf
    • http://files.jayadeviarts.com/uploads/1/3/1/0/131070011/vonalagigivajusudet.pdf
    • http://files.gailmadeitdesigns.com/uploads/1/3/0/7/130775974/9320542.pdf
    • http://sorajoje.streamlinenation.net/uploads/1/3/1/4/131454696/6665890.pdf
    • http://kukum.homelessheaven.com/uploads/1/3/1/4/131437092/rumepijamogaxek.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/extended_timeline_mod_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/vokexirafokuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/antivalores_y_valores.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/lugaroja.pdf
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/fumew.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/pakaxigofemafimujujuxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/73766056293.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8419/files/business_email_etiquette_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/misifilasup.pdf
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/cardiovascular_agents.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/67002775010.pdf
    • https://cdn.shopify.com/s/files/1/0436/3278/7609/files/46779417337.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008668.bin
e58470adcce7a515d7a318e126cf2fa3fbd2920a920792c9153e95d40f4908eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 5828 bytes
font_01_sfnt_off00009a33.bin
52469a784d6692b7bfc858a56cfa827fcb2c420cdbb050b18de6b4afdf605dca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A33 14200 bytes
font_02_sfnt_off0000c6e0.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E0 16164 bytes
font_03_sfnt_off0000dbf9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF9 4324 bytes

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