Malicious PDF — malware analysis report

Static analysis result for SHA-256 3daae7ecbb0acc8b…

MALICIOUS

PDF

50.7 KB Created: 2020-08-21 01:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b389daeea2ef40449b7470af28ace29 SHA-1: 3f1cebb43823a8177232d8e68130770b4c2c18a3 SHA-256: 3daae7ecbb0acc8b293b2000c9be6b7468e63c3522f8b9a3aaf44a33881a289c
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, with a critical heuristic firing indicating it's a malicious redirector link farm. One of the primary URLs, 'https://ttraff.cc/pify?keyword=broken+angel+background+music', is flagged as malicious. The document body is heavily obfuscated and contains remnants of this URL, suggesting the document's purpose is to lure users to malicious sites through a deceptive link farm.

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.cc/pify?keyword=broken+angel+background+music
    • http://files.topicalbiblestudylessons.com/uploads/1/3/2/6/132682883/pawezowepuvi_luzopir_dekidilugevune_diwigufuvon.pdf
    • http://siwowor.charlestonmanufacturingcenter.com/uploads/1/3/2/6/132695471/3a9c1fb745c0a.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/27162353269.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/83977392630.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/71248250880.pdf
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/3_audio_songs_tamil_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/58609083883.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/beginner_dumbbell_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/gejanisuzodumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/lefawe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3531/1784/files/4453915737.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f5e.bin
7903e6d5373aedc9c4948845b221112b3a3f16a97d58bf9cb5aaac7ff02963ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F5E 5512 bytes
font_01_sfnt_off000061f9.bin
fd54fb280a2999e0ca9343528fda8f8a448fcec949e0174b0ca311705312c97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 3832 bytes
font_02_sfnt_off000070d2.bin
72a85be911d1ebe5d0037072b9015f2753cdb5316cfe4f0a2865eee3c663bcb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 14680 bytes
font_03_sfnt_off00009e1a.bin
eb88b1cb0647ee3f0fa960ba7b4ffdf7eafdb5832fbde226f6b70d1ee86a3d14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1A 19456 bytes

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