Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2afcbed2ed9959…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 20:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2f6fa35c139a6d5e9ebbe2b5fd64e56 SHA-1: c2b46f7d9c4c4629ab1c7eec4739f02ad82dca2f SHA-256: 6b2afcbed2ed9959d8ffcc22b74c86f7cbdd4ef7f863a76c1839ae3a4cf532eb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. The document body, though obfuscated, contains text related to 'Bonne pratique de fabrication agroalimentaire' and includes the URL https://ttraff.cc/pify?keyword=bonne+pratique+de+fabrication+agroalimentaire+pdf, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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=bonne+pratique+de+fabrication+agroalimentaire+pdf
    • http://files.madisonstinemetz.com/uploads/1/3/0/7/130739570/7447172.pdf
    • http://vowut.nekimastrategies.net/uploads/1/3/2/7/132712253/sawajagebu.pdf
    • http://files.bikeforlifesd.org/uploads/1/3/2/6/132682802/peguko-safewarosamesu-kafivilozobo.pdf
    • http://files.fmrcmembers.org/uploads/1/3/0/8/130813988/f667beb5.pdf
    • http://videbezud.smokingsticks.net/uploads/1/3/0/8/130874598/6507558.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/4760/7720/files/saints_row_3_pc_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1424/files/98948547494.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/pazenoxavosigelid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/81513441479.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/watopokedexupanulorag.pdf
    • https://cdn.shopify.com/s/files/1/0455/3962/3077/files/59632837483.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/general_characters_of_bryophytes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/jopafalabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/kali_linux_tools_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000648a.bin
e999b2e5d2840624fb86172dd9d0645bb2abaead9e061dd1b5272a71850dcebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 5496 bytes
font_01_sfnt_off0000770c.bin
43651a492d73cd23fa7a1d2f139e78be40e2daf5791b350cb961a65ca7294365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770C 11720 bytes
font_02_sfnt_off00009bb2.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 4324 bytes

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