Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f06fce9fc76dfa5…

MALICIOUS

PDF

49.1 KB Created: 2020-08-03 18:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e22b4789074ef70ca3062ce4f7264b35 SHA-1: bb6da2c45f69b3fa1f01e51b3c5700fa2190bf9c SHA-256: 9f06fce9fc76dfa543aa409f8cd168fccbdb7ce42d22fc661986957d60c5a6f3
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Funny love quotes for her pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse.

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=funny+love+quotes+for+her+pdf
    • http://files.rolyart.co.uk/uploads/1/3/1/0/131070351/gegojezejivinene.pdf
    • http://files.johnsonswatersolutions.com/uploads/1/3/0/7/130775171/burevuruxowime_xeranitutilir_tugojalerixa.pdf
    • http://files.sanctuaries.org/uploads/1/3/1/8/131856443/jebegesogitesol.pdf
    • http://files.tonyastuartmelland.com/uploads/1/3/0/7/130775382/jerotogif-pesufutafape-mijare-devanane.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/koxilekovipufovusep.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/cash_book_format_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/18689288881.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/17337421373.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/84713441123.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/43362656789.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/39592455338.pdf
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/84112545621.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/jerry_maguire_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/how_to_force_pull_git.pdf
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/15636096538.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/managerial_economics_samuelson_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/engineering_mechanics_dynamics_meriam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/sinifoze.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074df.bin
fa154bf2a77816099b28a306ede7465e6a8352d59370b1fb7b610345e6bbf8a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 4996 bytes
font_01_sfnt_off000085e8.bin
4d63d8768809b853da1496791b6b92c9d75b4383e22f0a4c97c865e97e11050e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E8 10112 bytes
font_02_sfnt_off0000a89b.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA89B 4324 bytes

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