Malicious PDF — malware analysis report

Static analysis result for SHA-256 002b4e0522189a97…

MALICIOUS

PDF

165.1 KB Created: 2020-08-09 07:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6b8c6b4d6009d2531b6e1716c847aec SHA-1: 681fc175ae1d551ed3438d8fe9949b2c86796ea0 SHA-256: 002b4e0522189a97fe723e6c45e8f15713a8bfe241fe76e89489a50346200127
134 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, aiming to trick users into believing they are receiving a prize or parcel. It contains a malicious redirector link pointing to 'ttraff.ru', which is known to host malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wb?keyword=the%20doll
    • http://files.ahsra.net/uploads/1/3/0/9/130969926/vazuruzisuweba.pdf
    • http://files.crrcshows.com/uploads/1/3/1/4/131407088/safamovosileg-dajolit-bokevexevu-vamisa.pdf
    • http://files.acecancercareinc.org/uploads/1/3/0/7/130775825/9515725.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5907/5477/files/rerunidamiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/xobezoda.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7626/files/50897357306.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/zuvibud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/lusopuniw.pdf
    • https://cdn.shopify.com/s/files/1/0439/8913/9614/files/25352127396.pdf
    • https://cdn.shopify.com/s/files/1/0449/4213/1355/files/building_planning_and_drawing_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2050/7544/files/anexar_email_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/crtl_stream_kit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/sunobusiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.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_off00024e61.bin
436197c10918f2e4242513feda39346bd352cb3b4a092a0ccd62fe0964720f00
pdf-font-stream PDF embedded font (sfnt) at offset 0x24E61 5016 bytes
font_01_sfnt_off00025f76.bin
7ef8afbdc6aee5fbcf26e28676ec7ad6219cb8de59896ef44c4a7a291e34a2de
pdf-font-stream PDF embedded font (sfnt) at offset 0x25F76 11952 bytes