Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfef262c5a2dce3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-12 22:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5d7bf8d76d7a091d9f814d6c7eba587 SHA-1: 6c7f503512fca31f277a1e96714501253f040189 SHA-256: 3bfef262c5a2dce3b1e30ac9e30a7d4c45341f035f9969a43f587b3da431c3bf
140 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to Brazilian identity documents. The presence of a callback phishing lure heuristic further supports the assessment that this document is designed to trick the user into interacting with malicious infrastructure, likely for phishing or scam purposes. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/pify?keyword=cat%25C3%25A1logo+de+cedulas+brasileiras+2020+pdf
    • http://jifejib.wisconsinweddingmusic.com/uploads/1/3/1/3/131379395/gapefiko.pdf
    • http://files.apolloniacampaign.info/uploads/1/3/0/8/130813764/b5bb27aac5e26.pdf
    • http://pitiparal.kit101art.com/uploads/1/3/1/4/131437987/memipejonejoj_famunixitopovet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/80597166327.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/jinewiweloberirebit.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/ruxedoker.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/amniorrexis_y_amniotomia.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/3377916920.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/already_just_yet_ever_never_for_since_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/72723341820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0440/4668/0214/files/antrag_auf_lohnsteuerermigung_2020_anlage_kinder.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/dorutixopazomomuzikuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/57016065032.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/download_medical_biochemistry_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9969/files/advanced_excel_test_questions_and_answers.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_off00005971.bin
fedfccd208d0e9e8d5872197d952bd86332a98202c07fc0eb9c757192e37e7cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x5971 5876 bytes
font_01_sfnt_off00006ceb.bin
ae89149cac120449a2a140343071815d55f4137f1f08c0bc1c0227d715da70ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEB 15648 bytes