Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ab2c5bbd854596…

MALICIOUS

PDF

67.9 KB Created: 2020-08-27 19:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cc2c8e0168672b7b6b92e4d7b6f0a3f SHA-1: 87e392b4995bf9900d9e728fb3641018ba0695f7 SHA-256: f8ab2c5bbd85459616c0e3973b7ff440f975920895d9592c8378d3f44fe88580
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external content. The primary intent appears to be redirecting the user to a malicious site, likely for phishing or malware delivery.

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.ru/pify?keyword=instagram+template+question
    • http://files.dandressler.com/uploads/1/3/0/7/130775098/soxuz.pdf
    • http://files.calvarybaptistemporia.org/uploads/1/3/1/4/131437983/ea0ea18dcabf6.pdf
    • http://sijotexun.graceforthebroken.org/uploads/1/3/2/6/132695780/vexemawepogu.pdf
    • http://files.davisonavenuepta.com/uploads/1/3/1/4/131438658/6790862.pdf
    • https://cdn.shopify.com/s/files/1/0440/4668/0214/files/13307987219.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/piniguwurafimonape.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/articulaciones_del_pie_y_tobillo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/shut_em_down_open_up_shop.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/wordly_wise_3000_book_8_lesson_6_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/17826870182.pdf
    • https://cdn.shopify.com/s/files/1/0432/3406/6594/files/88516502865.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/26880139990.pdf
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/atresia_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/wefirexuvirapi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/babamodejukijo.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007918.bin
8c7d19c5f97f84c488b30f3d1e2415ab561a2bff7dbc97f4405e82db792a7af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7918 6676 bytes
font_01_sfnt_off000089ee.bin
125b5d7fa5ef093cda81daa63580ee20fbb67ac6297e51f5bcc20c85410f398b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 5084 bytes
font_02_sfnt_off00009b08.bin
e930e9d991c1b74737d9c18c0266a32551dda4f004cff96146c666d887b69fe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B08 9724 bytes
font_03_sfnt_off0000b942.bin
958c3295ef9d29d51c09140ce3b8a87c50f94f44dd5d787570e229c28bcdccb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB942 10496 bytes
font_04_sfnt_off0000dd31.bin
427558651cc0f5bb9ab1f262449aa9ead0e76e269d5605724c79589a4c58aef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD31 16388 bytes
font_05_sfnt_off0000f316.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF316 4324 bytes

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