Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d402a7225f1e4a…

MALICIOUS

PDF

46.0 KB Created: 2020-08-22 22:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fcdc5463744d5f0095e89f5e06dda76 SHA-1: b9d5ef28d3281974a116d3a83868f412bc18d9c8 SHA-256: 70d402a7225f1e4a58176766384dcf8bda4d7e6f5f55ca0907173d2b09550d43
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for a movie download, which aligns with the malicious redirector's purpose. The presence of many links, including those to Shopify, suggests a link farm designed to obscure the malicious destination.

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=amaravathi+full+movie+hd+free
    • http://files.myheartmystate.com/uploads/1/3/1/4/131453256/davuwom-kozojejoxon-busut-kanok.pdf
    • http://files.lastangelstattoos.com/uploads/1/3/1/4/131437147/paxosimegozeriw.pdf
    • http://vutolog.malloryaballinger.com/uploads/1/3/2/6/132682076/1629117.pdf
    • http://vufufen.cookiesnbytes.com/uploads/1/3/1/4/131453329/258dd1b839cee68.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/bedikuxilexolezi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/13916666583.pdf
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/refrigeration_and_air_conditioning_handwritten_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7403/4600/files/wabak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7966/files/jisonom.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4177/files/lirigivojidewulowuvumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/73150385617.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/sulujitor.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
    • https://gitlab.com/smc/meera/blob/master/COPYING

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006260.bin
c49d154dc880b616f4a771d26918cb3653a948cbd093862d8be651b5f2140bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 5020 bytes
font_01_sfnt_off00007346.bin
d0a419d84a6998c1f8e48e356a9dbb6f29aa44931457c0e3f31707ff407e4fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 5920 bytes
font_02_sfnt_off000088c0.bin
671a0d6f66e60a25c405caed849c4700e4183178b7a8e5cddd969692eb7c87a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C0 10080 bytes

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