Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2dea069e27d9e3…

MALICIOUS

PDF

66.2 KB Created: 2020-08-24 01:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d9c25a7720eb22aee7165998599fca3 SHA-1: b94b846cda43d229b51d35b2ba8473f9970c0c4b SHA-256: 0b2dea069e27d9e35a398880d873a5a4256669241d540cb7a2d6f95ca602d5c7
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially garbled, includes text related to 'Bhaiya tamil movie video songs' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of numerous external PDF links, many benign, may be an attempt to blend malicious links with legitimate ones.

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=bhaiya+tamil+movie+video+songs
    • http://files.americanartsfestival.org/uploads/1/3/0/9/130969742/kenidavatuzozekovida.pdf
    • http://tewov.aatp-mysterygames.com/uploads/1/3/0/8/130814347/27e981b01ec15.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/color_street_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/82318051200.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/19650637196.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6070/files/effective_police_supervision_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/52726990119.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/40617505329.pdf
    • https://cdn.shopify.com/s/files/1/0438/0239/4786/files/54458217339.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/markdown_101_discord.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/how_to_crack_a_geode.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1f1.bin
f782e6f4d5c915592eea2140294b69aee5880cf8e3d493c8e449fafdaf7fd992		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F1 5140 bytes
font_01_sfnt_off0000b35a.bin
ae006a689d3b3d81f440ca9e675f9e87a78afd93d52ae3a5d1d2efc8c028fa5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB35A 10704 bytes
font_02_sfnt_off0000d822.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD822 16164 bytes
font_03_sfnt_off0000ed3b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED3B 4324 bytes

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