Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a2bf63ba3d736c…

MALICIOUS

PDF

77.9 KB Created: 2020-08-05 02:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5c59c83662d3598eb68eb18e47f78f0 SHA-1: 71f063dd2af7a9cc56c3db56028a562ad243597e SHA-256: 89a2bf63ba3d736cca15d3749ca85506f6073af43221ba417c33e4932d516c2e
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains a URL that matches the redirector link. The presence of a 'MFA / one-time-code harvesting lure' heuristic suggests the intent is to phish for credentials or session tokens. The primary malicious IOC is the redirector URL which leads to further malicious infrastructure.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=three+letter+words+in+english+with+meaning+pdf
    • http://files.localbeetmealprep.com/uploads/1/3/1/4/131452841/sidulupemotikik.pdf
    • http://files.gengrouprestaurants.com/uploads/1/3/1/4/131438216/menozenaromin.pdf
    • http://files.cannonurology.com/uploads/1/3/2/7/132710624/rimewexala_bizivub_nafudonigaxi_luxalufonu.pdf
    • http://files.ahafonlinechapter.com/uploads/1/3/1/6/131606733/4553913.pdf
    • http://files.brightfromthestartchildcare.com/uploads/1/3/2/6/132695698/mololesedafoxarel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/19615567734.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8927/files/47517331297.pdf
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/files/benefits_of_wind_energy.pdf
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/fanafanezixapig.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8752/files/69037226492.pdf
    • https://cdn.shopify.com/s/files/1/0447/2664/8985/files/essential_organic_chemistry_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/7666/2949/files/81183184074.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2548/files/vonaxadolujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/jojajejafugafapokup.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/90804793191.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/
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f193.bin
ffcac422884a708c8ba138debc0b68443489b7642d962fa7358061a7f7ccc136		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF193 5496 bytes
font_01_sfnt_off0001042d.bin
63df237dcc3b86dd1f2c70b2fd6b20e4ed68b3c4ac25b43ad2189221007bea59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1042D 11312 bytes

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