Malicious PDF — malware analysis report

Static analysis result for SHA-256 824b15419b0663c9…

MALICIOUS

PDF

67.1 KB Created: 2020-08-18 21:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce71a4a1d99d28f86277111e33f11af7 SHA-1: cb0c0ed7a1f71917f9d22c23ef1427be16693f07 SHA-256: 824b15419b0663c94acb6f5ff43fd8af1d1b26d06def0b1a239c8bed3c257973
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=netflix+mod+apk+premium+2019', is identified as a malicious redirector. The document body also contains this URL and references 'Netflix mod apk premium 2019', suggesting a lure to download potentially malicious software. The PDF also hosts a link farm pointing to numerous other PDFs, indicating a potential SEO poisoning or spamming campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=netflix+mod+apk+premium+2019
    • http://files.werebuildmovement.com/uploads/1/3/1/4/131437770/061b14ac574.pdf
    • http://files.greatlakescockapoos.com/uploads/1/3/1/4/131437953/0df5e6cd5.pdf
    • http://files.sctecentralfl.org/uploads/1/3/2/7/132712207/japarufe.pdf
    • http://legowo.thelearningkirb.com/uploads/1/3/1/0/131069839/zuwad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/3352/4386/files/lemuwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/disasajinitugojapevofo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/sifefu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/fomukofet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/guxoxipunufetifoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vixugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/levowolumofug.pdf
    • https://cdn.shopify.com/s/files/1/0438/7805/6091/files/92282123765.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/29620584833.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3568/files/18656202985.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/gubajurogipazupikajibaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/72957337257.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/dante_bozanstvena_komedija.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/gixijuzakagaxizozevimi.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b2b.bin
b1c1ce7370a69e1215d0eb4a12573acc6822fce9660dd90795d6ac405c1b7d2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2B 5368 bytes
font_01_sfnt_off00009d7b.bin
1df77d16be7156084e8caff260e756c970f4813a3e676efd01c7eb4f898884cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D7B 2920 bytes
font_02_sfnt_off0000a9ed.bin
dffa16fd7f1b8afcd1c457b27e8bc65422253aa50e8fcc1d495220a315d2f57f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9ED 16944 bytes
font_03_sfnt_off0000d926.bin
09d9b920346b60a8cacbfcf40d2e83578dd0e71e7291700391113cbe47b9ea2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 16856 bytes
font_04_sfnt_off0000f04d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF04D 4324 bytes

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