Malicious PDF — malware analysis report

Static analysis result for SHA-256 278203f6883d47e1…

MALICIOUS

PDF

47.0 KB Created: 2020-08-08 01:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fae00f8c2b31128314aca66b801f23bc SHA-1: 9b9aa03cf035d69a263373f7d7495b529ea1f7cc SHA-256: 278203f6883d47e137adc4111f3175ffb6331b85ce02b7ebe869356bad477561
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a mass external PDF link farm, with the primary malicious link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF's primary purpose is to redirect users to potentially harmful websites.

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/wb?keyword=scientific%20graph%20paper%20pdf
    • http://files.thekingofinstruments.com/uploads/1/3/1/0/131070560/dekova-mejepazanedafe-jifagakugig-vuviwisivu.pdf
    • http://filip.faultlinederby.org/uploads/1/3/2/6/132683014/tezun-gebasewit.pdf
    • http://gokawu.deeplyseeded.co/uploads/1/3/0/7/130739309/ragavuv-pososaru.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/1977927567.pdf
    • https://cdn.shopify.com/s/files/1/0437/9276/0994/files/28877151859.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/79498129199.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/rozosibojazido.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/calendrier_2020_maroc_en_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/xukukowanupunesikozalofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/brand_guidelines_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/61660291735.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/reduce_size_acrobat_pro_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4934/files/nejaguwesazokone.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/72025611315.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/
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/xukukowanupunesik

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf5.bin
046bfeb6edc23f4b3d1b06f511900041fbc4d5aa694c70418c7ae1effb7bc03a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF5 4988 bytes
font_01_sfnt_off00007dd4.bin
3132894ac0369a9d2d14e93f6c00813722df822ed84823cd118b066b47e3aa7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD4 10200 bytes
font_02_sfnt_off0000a0bc.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BC 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.