Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aae986a6cd6f942…

MALICIOUS

PDF

33.1 KB Created: 2020-08-14 13:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bb0dd32e4ad50a6c9c297f828e784b6 SHA-1: 1a4ef0d65fa74d3f2e3f40232f52259b7de571d0 SHA-256: 5aae986a6cd6f9426efee8db7ff10d90605e9b1674a9b6d5a40d922eb601de8c
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. The document body itself is heavily obfuscated but appears to contain references to popular media, suggesting a lure to attract users to click on the malicious links. The presence of these links and the identified malicious redirector strongly indicate an attempt to lead users to harmful content.

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=bahubali+2+full+hd+images
    • http://files.beecoolbeesupplyllc.com/uploads/1/3/1/6/131637482/devalubejowi.pdf
    • http://files.lutiesplace.com/uploads/1/3/0/7/130776308/mezebo_jakafadokafe.pdf
    • http://files.quicknezautoleasing.com/uploads/1/3/1/3/131379844/lixuwiguxuv.pdf
    • http://gemafi.daw10.com/uploads/1/3/1/3/131398351/vesezuvovekabi-daratavegojofi-luwuvifuwisib.pdf
    • http://files.conquergoodcreative.com/uploads/1/3/1/3/131382955/budopuluta.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/52363844325.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomekanob.pdf
    • https://cdn.shopify.com/s/files/1/0440/5015/3622/files/cm_to_feet_and_inches_chart.pdf
    • https://cdn.shopify.com/s/files/1/0438/5705/1808/files/gre_practice_test_2017.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/lulufisoxixabebupapapom.pdf
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/50318299264.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/metric_bolt_thread_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/4083/3690/files/79125003192.pdf
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/dagumibukeredakatolufijet.pdf
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/mejawuriguwug.pdf
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/1000_books_to_read_before_you_die.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musigusuwekun.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000457a.bin
38558e95ef381bd006c801119e1c3bfeffca30439dab70ec34c3d777ead443f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x457A 5548 bytes
font_01_sfnt_off00005839.bin
04c382b7edd46bec183ad05f96837ea9fd61a6ab7cbbaf5c7e0d74a0ba403255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 9124 bytes

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