Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e53697cb3b22581…

MALICIOUS

PDF

40.0 KB Created: 2020-08-22 21:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0771680b4fef1da69cefa14279998de2 SHA-1: fb60f29eada03d656c4ad72eeee12e54a061d81e SHA-256: 8e53697cb3b225818823cba80f3ea8ef85265fcf81c31ae58d5b7d59f01db1fb
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=afjet+afyonspor+formas%25C4%25B1, which is likely used to redirect users to a phishing or malware distribution site. The document body contains garbled text and a reference to the malicious URL, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=afjet+afyonspor+formas%25C4%25B1
    • http://files.centralcitychamber.org/uploads/1/3/2/6/132681536/kafeliwesifiwov.pdf
    • http://files.millard-and-kleinsteuber-histories.com/uploads/1/3/0/7/130775892/vobozukibisusi_wusiro_titexawibap_zanipozezupafen.pdf
    • http://nakulare.brandito.net/uploads/1/3/0/7/130776008/c0512094658.pdf
    • http://files.plymouthfirstsaturdays.com/uploads/1/3/1/4/131452733/6625168.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/58445189327.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/9955640005.pdf
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/overhead_cable_tricep_extension_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/4678/8502/files/losujewamigolufinivenej.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/wifesa.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/26473789224.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/wugopoluxujerivasili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/didusazazowoxamok.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/what_is_an_example_of_sophistry.pdf
    • https://cdn.shopify.com/s/files/1/0438/3090/2946/files/pharma_interview_questions_and_answers_for_freshers_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d91.bin
8d26266a1f895ef1e33c6c38702c7d1581e26ed5f9aa172349c8a30fe1c003ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D91 4956 bytes
font_01_sfnt_off00005e67.bin
4adbc9731d08dc8999487793d8438e062085ab979cee9c6a6e92b7a431cda0d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E67 11916 bytes
font_02_sfnt_off00008365.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8365 4324 bytes