Malicious PDF — malware analysis report

Static analysis result for SHA-256 197435ae611cff3d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-03 09:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c68d7de26277a641bd1ff038bc10f61f SHA-1: b61da94071c68fc15da36cf5cef93fb04d95dfc1 SHA-256: 197435ae611cff3d840216cd4cf0f45f7e0b5b4f37f2023589097824d49d9f06
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.cc' which is associated with malicious activity. The document body, though obfuscated, contains the phrase 'Bank statement in spanish', aligning with the 'SE_INVOICE_LURE' heuristic. The presence of many external PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=bank+statement+in+spanish
    • http://files.northamericancatholicecumenicalchurch.org/uploads/1/3/2/3/132303269/7434817.pdf
    • http://files.belongingcatholicconference4women.com/uploads/1/3/1/4/131453539/7545074.pdf
    • http://files.westaucklandcadets.com/uploads/1/3/2/7/132740564/najumo.pdf
    • http://files.forhisgloryministriescenter.com/uploads/1/3/0/7/130776828/2448574.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/31681625432.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/excel_2013_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56070096689.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/riferoda.pdf
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/88317260720.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/vajiwuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/26991980993.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/17688090761.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0840/files/kuzeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/wewedewime.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/rotok.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063de.bin
d86c88d9cd714fb64d2283d6c899beafebeda2966a2c453766e1d542c3514b17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 5044 bytes
font_01_sfnt_off000074e2.bin
a9b80ac947b58fcadd1a8a30aa5505dcd549a69a4fa9cacb0f6a4adb84df764a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 10736 bytes
font_02_sfnt_off00009975.bin
eaa138153142e1b202f6e132b5b79d2ae4483da1523e62d7c19f47fa5ad289e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9975 16068 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.