Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2bb05a649b250e…

MALICIOUS

PDF

43.5 KB Created: 2020-08-03 15:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98fd9b57e95187eeb99c5d8f3d8bce13 SHA-1: 880c710332387a69e24348c125222234f7085202 SHA-256: 2c2bb05a649b250e1c690ba5e8b74f6bf94345ed6528de2bd4bdc2453dc35186
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the target URL, suggesting a lure for users to click through to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=functionalist+perspective+on+aging+pdf
    • http://favajedot.poulomisanyal.com/uploads/1/3/0/7/130740178/mafedubejedavel_nalixiruboj_zesejoranexani_fimimolabok.pdf
    • http://files.tathrabeachcountryclub.com/uploads/1/3/0/8/130873918/nekerakadazopikasi.pdf
    • http://files.opalthestabyhoun.com/uploads/1/3/2/6/132695492/89c812f78.pdf
    • http://files.algonquinparkcanoetrips.com/uploads/1/3/1/4/131408854/rowoxixetuwap.pdf
    • http://files.evapfaff.com/uploads/1/3/1/3/131383467/bafumidatabewur.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/fisekugemepukefejijase.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/xoxitewasenuvuzomej.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/36494959352.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/gadixekiwidisaxis.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/67551310855.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/tusikutagedu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/gezunadufupexavatomaxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/60187259925.pdf
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/21023036969.pdf
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/coleman_pop_up_lift_system_parts.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/nasasarikavak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bijuwosozawubuvenokuzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/watch_wrestling_uno.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/susemajowisebim.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1071/files/95866001011.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_off00006c8e.bin
bdfe1131bcec27db429987c320925e2611dca14d673e2495e47820797474a498
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8E 5340 bytes
font_01_sfnt_off00007ed1.bin
f6e0eff40b760df57e6fa3f9ee8b22b2c6b32c362fdaa102cebb6a0832013f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED1 9848 bytes