Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b4f0707c6ee2df…

MALICIOUS

PDF

50.7 KB Created: 2020-07-27 07:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572fbb482aeffbd7a4b18786aa7de1d6 SHA-1: 31d75d9e289baed70f3588626d807d03c4112c13 SHA-256: a6b4f0707c6ee2df5826be00478be2bd82330a356f869bd822b11e07497a6108
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=call+recorder+apk+android+9', points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'call recorder apk android 9', suggesting a lure to download potentially unwanted or malicious applications.

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.ru/pify?keyword=call+recorder+apk+android+9
    • http://files.alishahmalik.com/uploads/1/3/2/3/132303013/lozidaninuf.pdf
    • http://files.morethansoulfood.com/uploads/1/3/1/3/131383514/fb31e59a8.pdf
    • http://files.miquellesbathbodyandmore.com/uploads/1/3/1/4/131406780/eb4b4dee46e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/75591175785.pdf
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/volerobi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/pavuvogutuzoragow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/melolugoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/fijizeren.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/xixarafodataluropivuzofe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/jejugopabakasawitisi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/36607549415.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/sefedi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/xopubilogaxukazuxajef.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/84709934435.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/67870898694.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_off000073c1.bin
35601bd0ea87c5bbad5bd69ec3e9bd31dfdad4f9886997f0250bc69bcf9e3e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 4840 bytes
font_01_sfnt_off00008432.bin
7d088dcb91b6af8b4a7ca543bddf5fbc6af6ec488b5add4ba7ba1d63c9af527f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 10528 bytes
font_02_sfnt_off0000a81f.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA81F 16164 bytes

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