Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a11a6e30611814f…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 05:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4615683bd669bd197c279a44239643d6 SHA-1: b9bcf3cab31cb68271f265ce03937ad9bc2b03ae SHA-256: 7a11a6e30611814f6edda1606d30dd1e9d31859a13c523327151de0cd8445a28
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=design+portfolio+template+psd'. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. The presence of a large number of external PDF links also indicates a potential link farm or SEO manipulation tactic.

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=design+portfolio+template+psd
    • http://files.moesoap.com/uploads/1/3/2/7/132740467/mulujerejato.pdf
    • http://files.moogully.com.au/uploads/1/3/0/8/130873708/memapafapisud.pdf
    • http://rosunoti.cristinascuisine.com/uploads/1/3/0/7/130775403/1a05f9f2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/4381344005.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/86437977992.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/rainforest_animal_adaptations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/81220377443.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/67351775402.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/gokus.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4810/files/virology_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/63189025765.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2261/files/the_iliad_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/pavakosifiwemonurokomesuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5778/2690/files/autocad_tutorial_for_civil_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5006/files/deponia_3_walkthrough.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_off000072c4.bin
10b619a2833b64af7a7807dff006ad7231b2ab1b49e10926bd814304f73b5c79
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 5360 bytes
font_01_sfnt_off000084df.bin
adffd658b555f650e988ad3bf198a85930ae44453052b61fb7b8a4d7c304ee90
pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 10352 bytes