Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c9ecfc0f4aa4d7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 00:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 555ada3d534772d02ac2f9655777d131 SHA-1: 6a93e86f191bc47eb1c47727d9afd3d4b8b29771 SHA-256: 23c9ecfc0f4aa4d7381ca752015eb7302e54666b3731c0ada28a3aa704f91a5e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a lure for an iOS beta profile, which is a common tactic for credential harvesting or directing users to malicious sites. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms that the embedded URL leads to known malicious infrastructure. The SE_MFA_LURE heuristic further suggests that the intent is to trick users into providing sensitive information, potentially related to multi-factor authentication. No scripts were extracted from this sample, but the document body and heuristics strongly indicate a phishing attack.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=ios+13%252F+ipados+beta+profile
    • http://files.higherlevelevents.co.uk/uploads/1/3/2/3/132302710/zomevekifike.pdf
    • http://files.aaronhosannah.com/uploads/1/3/1/4/131454151/xefer.pdf
    • http://files.qpamarketing.com/uploads/1/3/1/4/131413485/9832590.pdf
    • http://files.fieldmusicals.com/uploads/1/3/0/8/130873849/9374f5b46.pdf
    • https://cdn.shopify.com/s/files/1/0444/0319/6070/files/blueprint_english_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/integral_calculus_by_shanti_narayan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/foxeburemikinemuluxipew.pdf
    • https://cdn.shopify.com/s/files/1/0462/8866/6785/files/zasirarem.pdf
    • https://cdn.shopify.com/s/files/1/0460/0781/2257/files/jaxuwipovi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0935/files/calisthenics_workout_and_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/96067847706.pdf
    • https://cdn.shopify.com/s/files/1/0431/5555/4458/files/zasuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/54662552104.pdf
    • https://cdn.shopify.com/s/files/1/0433/0474/7168/files/9504036811.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/tososelelefobulafade.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_off00006012.bin
ce7c9742f48f1980eed7671ba3d28a65f2ecf97858a29a06be4052a0b38625e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 5364 bytes
font_01_sfnt_off0000725e.bin
ccd347bc65c361ae63bc04c9c8febb550516c6f5f95e12f9a3bd9e6fffc60c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x725E 10416 bytes