Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7e1faba6255bba…

MALICIOUS

PDF

39.7 KB Created: 2020-09-09 15:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: be5a00c4b8cb8e6d01b905154b63c8c4 SHA-1: 3197b218b778d9f6b4cd12cc12041bd8b20d1995 SHA-256: 4f7e1faba6255bba40a138e486712d15182ef939188bd6d42f9a8a6e208f294e
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, includes text related to 'tripartite agreement format sbi' and the malicious URL, suggesting a phishing or malware lure. The presence of numerous Shopify-hosted PDF links, while many are benign, indicates a link farm strategy, potentially to improve SEO for malicious content or to obscure the primary malicious destination.

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/wix?keyword=tripartite+agreement+format+sbi In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/xovaxatuforiwimupatov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/17561051678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/segafavewota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1117/8649/files/valve_actuating_mechanism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7185/files/roteponab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/vutikude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6284/files/54927356085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/dodge_dart_2013_reliability_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0215/files/wedding_march_music_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/opera_browser_64_bit_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/34217924050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6870/3398/files/japanese_to_english_translation_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6779/5622/files/apk_bein_sport_connect_indonesia.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 5280 bytes
SHA-256: fe9f6cd8e68d418634697adb25e841b2655133ee8a20d6986551d2d08029d135
font_01_sfnt_off000070ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AE 9868 bytes
SHA-256: 4fea0bf50b346e35a8013562da8f4832f8642a5232780646873179eaad456c37

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