Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bd6860dc8561e5…

MALICIOUS

PDF

84.7 KB Created: 2020-08-07 21:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7d734937ae733267c7d6f13d37300f3 SHA-1: 66dbd15946d23c8b22918312572f33efb08a1d89 SHA-256: 63bd6860dc8561e561d6ca6e7640c635fc7397f5078fbb4fa1a9a42680e2950e
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a technical analysis document, which redirects to a malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this redirection to known malicious infrastructure. The ML classifier also strongly indicates maliciousness. While no scripts were explicitly extracted, the nature of the PDF and the embedded link suggest it's designed to lead the user to a malicious site, 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=technical+analysis+from+a+to+z+pdf
    • http://files.healthyforestcoalition.ca/uploads/1/3/0/8/130874143/f57d766ecdb9fe7.pdf
    • http://files.elizabethsboutiques.com/uploads/1/3/1/1/131164431/2732552.pdf
    • http://files.hoothootpost.com/uploads/1/3/2/6/132682282/5709165.pdf
    • http://files.3sistersinsrilanka.com/uploads/1/3/1/3/131380745/punegoz-rukakulome.pdf
    • http://files.missouriinstituteofhypnotherapy.com/uploads/1/3/2/6/132695543/8275253.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/3052/5590/files/gomugudebogafutiwesosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/load_json_file_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/manual_j_residential_load_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/xaxeta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/87695194147.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/90005391204.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/public_policy_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/foraminifera_bentonik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/lominger_competencies_list.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_off00010e35.bin
0b80a6761d3f4f678c3e15562d63e16f99135ef98e2605f86c608d47afed89cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E35 5496 bytes
font_01_sfnt_off000120cf.bin
54769bfd317f3d2ab47968761faca117511d395c2ea4b0a08c0ff95dd3eef2b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 10652 bytes

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