Malicious PDF — malware analysis report

Static analysis result for SHA-256 00277f32b884ece4…

MALICIOUS

PDF

46.5 KB Created: 2020-08-03 11:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1364a27d87899f085041ccdf526b687 SHA-1: 7335fe936ba40b060fdc4e72ab007a63079aaf46 SHA-256: 00277f32b884ece43cec8b55fd30e75e64bc5d5d092b2fad5d11fb4fb21e08b8
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure for a 'Canon pro 100 manual pdf', which is likely a pretext to encourage clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=canon+pro+100+manual+pdf
    • http://files.cavalierbattalion.com/uploads/1/3/1/3/131379477/rusugijapufaju.pdf
    • http://files.rappahannockmusicsociety.org/uploads/1/3/0/7/130775102/zuwagiveremotot.pdf
    • http://files.damnearcabins.com/uploads/1/3/1/4/131483083/4956039.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/xatefebej.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5055/files/crackle_on_wii.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/70228048909.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/tatiwavosaginadep.pdf
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/guvefugasonokoxalutek.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/83455380709.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/39030236240.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/fcc_callsign_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/tijimegavegukuwaxutanadeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/lotiwojivusatanifagunifi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006071.bin
fc78aa9b56f5853fe5960dfae853810e7f9f715e1adf782445b768f9173e43ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 4860 bytes
font_01_sfnt_off000070d2.bin
8934e08fa74a5c5d563c884c350703f25a210ee7619c5b4b806996b7b94b7af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 14756 bytes
font_02_sfnt_off00009ef5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF5 4324 bytes

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