Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0b3165593906ab…

MALICIOUS

PDF

48.0 KB Created: 2020-08-09 19:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 275dfa31f0cc7e3f9cab65ab518be175 SHA-1: af1f656dc1edd2407785a5b1b4f7f896047c9121 SHA-256: 4f0b3165593906ab9a9ae4131a70b65e9f588418f673a247e87155121d0d3a3c
130 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=program+budgeting+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous external links, one of which is 'https://cdn.shopify.com/s/files/1/0436/1653/4690/files/personality_disorder_symptoms.pdf'. The document body, though heavily obfuscated, contains the text 'Program budgeting pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The SE_INVOICE_LURE heuristic further supports the idea of a deceptive document.

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.
  • 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
  • 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=program+budgeting+pdf
    • http://files.huntelk.net/uploads/1/3/2/7/132740463/jipoxorelujutena.pdf
    • http://filakexap.mirrormath.net/uploads/1/3/1/4/131437657/fafogutufedonolusa.pdf
    • http://womiwakiv.saintstephencca.com/uploads/1/3/0/8/130813528/7323582.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/personality_disorder_symptoms.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/bonopuxikularelikejiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/wusonasagabipuwavowenomu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/general_biology_college_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/zalapikujumavuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/10939474226.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/payroll_accounting_entries.pdf
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/dojasubasapamesijar.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/60744729887.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/66109275964.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/bible_study_lessons_on_forgiveness.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d60.bin
8c5799e39600207e35db8001c9468af33a479d56f54ed64f35daf97d88883671
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 5292 bytes
font_01_sfnt_off00008f44.bin
d213d64fbbc5be6c71e418fdd650f95295bcdfaeabe396ffbc5f03552e4e0df7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F44 10472 bytes