Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c3fe179324760c…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 22:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4816a4fff604875cde4035cfad8f4611 SHA-1: a9c629a34ba69abbed711b9a9917e05ca4ea3fb3 SHA-256: 34c3fe179324760c9b362b79fd0c168bb79a4e06aaf7a74740c9426709ebd663
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Aiag cqi 27 pdf' and includes the malicious URL. The presence of a password-protected archive lure heuristic suggests this PDF is intended to trick the user into downloading a password-protected file, likely containing a further payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=aiag+cqi+27+pdf
    • http://files.annualreport-m2016.com/uploads/1/3/2/8/132814427/delopufekigo-rotivobo.pdf
    • http://files.buffalo-hood-cleaning-services.com/uploads/1/3/1/3/131380343/toxogep-zagevifod-reloduge.pdf
    • http://files.aawcphilly.org/uploads/1/3/1/3/131380850/pewub.pdf
    • http://files.duluthfinepianos.com/uploads/1/3/1/4/131452811/3ba0a88.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/75191688846.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/tiwef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamawogedeveredu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/12218849389.pdf
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/16644083678.pdf
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/zefopigagemutagimi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/89315391722.pdf
    • https://cdn.shopify.com/s/files/1/0432/7564/9180/files/47902153385.pdf
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/92592043468.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/kikosevepen.pdf
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/the_faerie_prince_rachel_morgan.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_off00006c23.bin
2d740d3dac1e1923bf78ab90f03b9335b8ffde638ea354d7e7078e9863fe0e2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C23 5344 bytes
font_01_sfnt_off00007e79.bin
a81f6ded947cd719078f99a82e79d49a230e7daa7d170eb835ed4d6e06460c05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E79 10412 bytes

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