Malicious PDF — malware analysis report

Static analysis result for SHA-256 9caffb2882f0be17…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 16:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7b729d7599f498dd9d2ec7bb071355a SHA-1: 62204893ea8382f094929482b4fd238fae35bf30 SHA-256: 9caffb2882f0be174c73fe1e6fd3fe0fbb1606bac83deed2d1e91445cd336554
140 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=ammonium+lactate+davis+pdf', is flagged as a known malicious redirector. Additionally, the document body contains text and URLs consistent with a callback phishing or tech-support scam lure, suggesting an attempt to trick users into calling a fraudulent number or visiting a malicious site.

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.ru/pify?keyword=ammonium+lactate+davis+pdf
    • http://files.stevemillerworldview.com/uploads/1/3/0/7/130739062/6025175.pdf
    • http://files.samuelcjohnsonartist.co.uk/uploads/1/3/1/4/131406104/43a1f.pdf
    • http://misal.pcconcertseries.org/uploads/1/3/2/6/132681647/gaseb_jexokitezuj_viditufumu_fukezabi.pdf
    • http://files.hazelsnetogo.com/uploads/1/3/1/4/131437139/lamodutori-tekurazesofa-vezavebexa.pdf
    • http://files.breatheserenity.com/uploads/1/3/0/9/130969746/jijaz-pitojepu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3618/0634/files/mpdf_border_radius.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/un_mundo_feliz_aldous_huxley_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifivejeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/viwinivugoxazukelan.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/laralofekikisakibage.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/lanodiwegozod.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/26369234237.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/86862431925.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/joxojo.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_off000069ac.bin
fd4c22d91bc5499255c526f9bcd7caf4bf7dab4cadc8e0868f7fd0f9c61ca5bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x69AC 5252 bytes
font_01_sfnt_off00007b84.bin
7ac8086f84cd2138845b2b1f5f0274093efa08c3ca025de9293aeac373400a95
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B84 10296 bytes