Malicious PDF — malware analysis report

Static analysis result for SHA-256 3361e55ea112043f…

MALICIOUS

PDF

41.5 KB Created: 2020-09-10 10:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41f11b35aad66ad3bb828e8a60fe997e SHA-1: 6dff632d51b78f1cf51e10d929ed8977f0207542 SHA-256: 3361e55ea112043f3e138b341f4effc8ad7015d93f757b5655ef900c1e322524
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one that redirects to malicious infrastructure. The document body text, though garbled, appears to be a lure related to a technical issue ('Android file transfer stopped working on mac'), combined with a call-to-action phrase. This suggests the PDF is designed to trick users into clicking the malicious link, likely leading to further compromise.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=android+file+transfer+stopped+working+on+mac
    • http://files.aurabin.net/uploads/1/3/1/1/131163832/35feb9a796.pdf
    • http://files.reducerecidivism.org/uploads/1/3/0/8/130873840/buwokuvowibojake.pdf
    • http://files.kendraleighmakeup.com/uploads/1/3/1/3/131398194/9a56d2dcaad8db.pdf
    • http://rakegefu.hrv4biofeedback.com/uploads/1/3/1/4/131438216/tedilexofu-sosojomubaxu.pdf
    • http://bitogiva.justmichiganmade.net/uploads/1/3/1/3/131398036/2a08682cfc.pdf
    • https://cdn.shopify.com/s/files/1/0439/8107/8686/files/clown_song_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1075/files/tabla_de_medidas_para_brocas_y_machu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/rotabenopekezevidoba.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/83857114468.pdf
    • https://cdn.shopify.com/s/files/1/0436/9013/1609/files/free_speaker_booster_app_for_android.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_off00006348.bin
3b20805f5086dfea8efb4c696f9442f228b7c75e18dcd8c99a91fd0ff90f0c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 5620 bytes
font_01_sfnt_off0000766c.bin
1bc04619c43892fe47467a279618cc7269a8c1218640ba616095d2b6f050c851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766C 10120 bytes

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