Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c29484e13c4ae2e…

MALICIOUS

PDF

43.6 KB Created: 2020-09-17 15:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3579696a3e1f6b0e7ec5970bf6483d4d SHA-1: 4b17a61c3ac6fffa9224a6db8a04bd1e3331efd7 SHA-256: 8c29484e13c4ae2e175f95cf18e4bf74aa0fc605f8a22ecf4fbf473bba53c2e6
160 Risk Score

Malware Insights

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

The PDF contains a lure related to editing APK files, directing users to a malicious URL (https://ttraff.me/wix?keyword=how+to+edit+apk+files+on+android). It also features a large number of embedded links, many pointing to external PDFs, suggesting a link farm or redirection strategy. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be intended to provide instructions for accessing a password-protected archive, a common tactic to bypass gateway security.

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.me/wix?keyword=how+to+edit+apk+files+on+android
    • http://files.heikahaehaekupenga.com/uploads/1/3/0/7/130775257/60f838.pdf
    • http://piwub.fbctitusville.org/uploads/1/3/1/4/131407921/vepiforuwos_tozulifilit_zonapo_zunudaxasevu.pdf
    • https://54e1f206-d4db-4a25-ad6f-e82d831e6ab0.filesusr.com/ugd/0d089b_3bcfdb06fa55411ca625a95418859cbf.pdf?index=true
    • https://d663288b-5459-477f-a762-98dacbcd72f6.filesusr.com/ugd/ef0078_0cb2bf20587a48779d44d5ac7ce313e0.pdf?index=true
    • https://f4d8d70e-dc22-43db-a058-d6b001283366.filesusr.com/ugd/8c0e65_7cab28177874492e8c7b778cb72d3a5d.pdf?index=true
    • https://679dcbb8-e74f-4384-93ed-8eda936dce9d.filesusr.com/ugd/83e584_a2f5d4c500f744bda9d1c2dce4715722.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/90887282050.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/65993940200.pdf
    • https://cdn.shopify.com/s/files/1/0459/9663/8375/files/phonics_rules_anchor_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/silodupaxivafuneluladexaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/dutufoz.pdf
    • https://4839bfcc-77e7-4772-a7f8-8873215db072.filesusr.com/ugd/10b03a_934ff7f2960640b78935b5793f0d3a71.pdf?index=true
    • https://f4ff06fd-c29a-4772-b160-25d6cb10b0ef.filesusr.com/ugd/7dfe85_a4619eb676104f92b3b721a78f2a8c61.pdf?index=true
    • https://e120b060-bf25-4a4a-a46a-9aa4846441ec.filesusr.com/ugd/cb2bed_9eb3dd2d81cd46b3b0e0ad86a0ab88f6.pdf?index=true
    • https://c7bee60d-8a2b-4452-947f-c3f58c52751e.filesusr.com/ugd/3d0627_5ee43afbff2542469411385851b11cc6.pdf?index=true
    • https://5d4e8228-a56e-4cbc-aabd-83979c561069.filesusr.com/ugd/d90490_b856a27c502c4034a58d5add217cc18c.pdf?index=true
    • 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_off000063cf.bin
b6cbbabff76b141fcf0d6e439ae2baa6a881f465b7ba1449184aea5552048559		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CF 5152 bytes
font_01_sfnt_off00007579.bin
08b6948d8d2d770fa781c1eb95d8bc622c48f58fef3c6e7da5bb95f198038e71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 13692 bytes

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