Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ce6be03395a363…

MALICIOUS

PDF

47.1 KB Created: 2020-08-18 14:26:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f7e343aa4fea23549ff12a8d4dae1fc SHA-1: 375b4d55f826b9e92daf3bfe8c06ed10e2ca772f SHA-256: 68ce6be03395a363675439e7f6e856cb7f2893e499bbc7353853c424532a8682
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL, suggesting an attempt to lure the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify but some on unknown domains.

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.com/pify?keyword=wallpaper+anime+romance+android
    • http://gofavedu.rmrattlerhoop.com/uploads/1/3/1/6/131637224/3585153.pdf
    • http://doxam.breannefahs.com/uploads/1/3/0/7/130775734/c4dc4.pdf
    • http://files.skills4podium.com/uploads/1/3/1/3/131380063/wutuzeti_nereno.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/52920075501.pdf
    • https://cdn.shopify.com/s/files/1/0433/6094/4296/files/double_line_graph.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/44106004967.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/city_of_heroes_controller.pdf
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/complete_mba_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0433/8892/8150/files/vijerekijesevajur.pdf
    • https://cdn.shopify.com/s/files/1/0444/3789/7383/files/vocab_for_toeic.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/ligojelagasasumimidopepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/portal_2_end_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/desileririx.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/78127389719.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/konuzetajuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/soteferododifotulilax.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_off00006f70.bin
38a3443adb70f13d6b4c4e2168a09aa5818534b70faa5f86ba739dfa9ca5b02e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 4764 bytes
font_01_sfnt_off00007f75.bin
5ed705c3f6bcb3b715312ad9509a3e49185416b139c29b07d95b20a4b7baece2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F75 9948 bytes
font_02_sfnt_off0000a179.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA179 4324 bytes

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