Malicious PDF — malware analysis report

Static analysis result for SHA-256 012ed79c0a8875b4…

MALICIOUS

PDF

44.7 KB Created: 2020-08-22 23:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 608472d20cab9f51c52108ba953c69e1 SHA-1: e4ec03d8a11d42e9852e30843cbcc54165eb02fa SHA-256: 012ed79c0a8875b4e11fb135b5de55a8bbe56ed97dd030ee956bd4e6a31ae3de
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to external PDF files, suggesting a link farm or redirection scheme. The primary malicious URL, 'https://ttraff.ru/pify?keyword=guidestones+georgia+map', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, indicating an attempt to lure the user to malicious infrastructure.

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=guidestones+georgia+map
    • http://files.michalsophia.com/uploads/1/3/1/4/131437605/vujugul-mogiregupi-zemip.pdf
    • http://files.daikokuramen.com/uploads/1/3/0/8/130873783/fizemotorasexaf.pdf
    • http://xuregana.drnicholasbradfield.com.au/uploads/1/3/0/8/130814575/wutara_tujamif_sanawekoxumewox_savosu.pdf
    • http://romed.englishrunnymede.com/uploads/1/3/2/6/132695969/wefusovewebav.pdf
    • http://files.purposehousesoberliving.com/uploads/1/3/0/8/130874204/e7f5681f881f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5901/8919/files/mtd_yard_machine.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/69240090677.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/63122572328.pdf
    • https://cdn.shopify.com/s/files/1/0429/1310/4028/files/62214147976.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/lekamozofukamiwez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/25584435392.pdf
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/5764599336.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/kotor_2_mod.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/application_for_canada_visitor_visa.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_off000070c5.bin
7bd14d9775fe1f3bfe1a81a7d01b53ce33f42c77aeb9bd73aab60c32ad9b6beb
pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 5276 bytes
font_01_sfnt_off000082a1.bin
e84b495e47cc6dfbee84a7e74673e721764a15cb1ab66e81de53b307dcb69290
pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 10428 bytes