Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aef4648f80edfcb…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 00:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 474d11ca7ca3d0a6449ba7e97418a5ce SHA-1: f8827139e56601c1e1ab39319f00b0d8b3a66b21 SHA-256: 9aef4648f80edfcb7d4889b0c35278f0599e3c67e6384f92384d9acc1260399a
160 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a common tactic for phishing and malware delivery. The document body and heuristics indicate a lure related to changing an Outlook password on Android, suggesting a phishing attempt. The presence of a password-protected archive lure further supports this, as it's often used to bypass gateway scanning. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used to improve search engine ranking for malicious content.

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=change+password+on+outlook+account+on+android
    • http://xojewal.misskatiesdancestudio.com/uploads/1/3/1/3/131380600/2258934.pdf
    • http://files.quinta-milhafre.com/uploads/1/3/1/4/131437822/xizanenuf.pdf
    • http://files.akwriter.com/uploads/1/3/2/7/132710721/d10a0154d4bc9a.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/android_camera_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/kilenavezajozijenigekuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4789/4683/files/palalovimirabesebumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/15486856612.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/vacaciones_de_terror.pdf
    • https://cdn.shopify.com/s/files/1/0437/3911/9765/files/google_sheets_query_order_by_date.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/79853140357.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/68442351499.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/papotapibubogutovisus.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/honda_gcv160_spark_plug.pdf
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/building_maintenance_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/niranu.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_off00005ce5.bin
a19ca199e65c76a112ce609184af236ac9f44e5a0fd8a0e643aaa5b67a6f928d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE5 5396 bytes
font_01_sfnt_off00006f47.bin
59435c6de35d0b611ee4be1bbe05a9454c7ad4c3c8c1f294018d08b2dd9de61a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F47 10412 bytes