Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5739fa5744bd99…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 14:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 570b0829df36513572ae6aa187691dbc SHA-1: a615077c582a368c4c698ba0fe7a71374f803dbb SHA-256: ed5739fa5744bd99040957ebfeb5af9d69a01d14d459bc111d108b94e4c0d06f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text referencing 'Blackboard launcher mac' and includes the malicious URL. This suggests a phishing or social engineering attempt to redirect the user to malicious infrastructure.

Heuristics 3

  • 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.
  • 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=blackboard+launcher++mac
    • http://files.annascafebar.co.uk/uploads/1/3/1/4/131406947/dametopujanoparoko.pdf
    • http://files.dsmtoolworks.com/uploads/1/3/1/8/131872070/ac808a33c2f.pdf
    • http://rutiru.drtmobilevetcare.com/uploads/1/3/0/9/130969953/vesiwajefif.pdf
    • http://files.pythonregius.com/uploads/1/3/1/3/131398144/16ef7a73c.pdf
    • http://files.downcenterlinedressage.com/uploads/1/3/1/4/131453592/jelozobemiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/pawejatogiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/sozis.pdf
    • https://cdn.shopify.com/s/files/1/0438/5076/0357/files/anomalias_congenitas_del_aparato_reproductor_femenino.pdf
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/causes_of_ischemic_heart_disease.pdf
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/bozosibaxaji.pdf
    • https://cdn.shopify.com/s/files/1/0457/0185/7436/files/aimersoft_dvd_creator_crack.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7805/files/lab_safety_worksheet_answers_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/86545371720.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/pedamagigakipevitak.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_off00006b2f.bin
b293ec90aaeca845247004412227b363cdc46197f26c0a60a33b3fe3c323187f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2F 5252 bytes
font_01_sfnt_off00007ccf.bin
3413dba5dae094a67846ab46dc68b49e8b203b25442f4a617734b047439d8ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 9880 bytes

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