Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f47d5ef979a50f6…

MALICIOUS

PDF

34.9 KB Created: 2020-08-20 14:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29312dfa1a4cd48f359ca80a29c4bd67 SHA-1: ea8684f7ffd44e7d676526ec6d29ecb883632d66 SHA-256: 8f47d5ef979a50f65ad9ed2b8ddd7c3c41e0e5876df61e8ca7ecf82ee34a5a6d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to manipulate search engine results, with one prominent link leading to a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=adanga+maru+movie+songs++isaimini', which is flagged as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious sites, likely for further exploitation or phishing.

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=adanga+maru+movie+songs++isaimini
    • http://files.edmundmichielaw.com/uploads/1/3/1/4/131452811/1424760.pdf
    • http://poxobug.thelytlebarn.shop/uploads/1/3/0/7/130739625/jimatatof.pdf
    • http://zezilakif.mstoal.com/uploads/1/3/2/6/132696483/ninabazixidex_raselavadafedol_zusimewoxon_mipexap.pdf
    • http://wukanam.itransformyou.com/uploads/1/3/0/8/130874359/jewidedukur.pdf
    • https://cdn.shopify.com/s/files/1/0449/3144/9000/files/lowest_common_denominator_calculator_with_variables.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4177/files/46905622626.pdf
    • https://cdn.shopify.com/s/files/1/0461/3740/9689/files/welobuxirikebowafebadab.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/kalender_2020_nrw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4682/1278/files/59580159733.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/zebodikobewejanurenavakem.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/sixeninaworetupatimem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/bezajakejopezulitutewalin.pdf
    • https://cdn.shopify.com/s/files/1/0431/2855/3634/files/email_writing_tips_and_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/al_quran_dengan_terjemahan.pdf
    • https://cdn.shopify.com/s/files/1/0452/8082/1410/files/pearson_technical_drawing_with_engineering_graphics.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b87.bin
49cbcd1e17aa0b72081a3404dbc3f63f6ff8262172104c0d8fec8658a2cbf6de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B87 5160 bytes
font_01_sfnt_off00005cfd.bin
1c771399da82406fc457a6a8febdaf785fb1aef1ca8047b38d46a57c4945ee60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFD 9972 bytes

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