Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda9830d968aef45…

MALICIOUS

PDF

54.1 KB Created: 2020-08-21 00:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4da77a1f7031ffd46ad55a37893fc3dc SHA-1: 2976db18da36536010ac686db24531b28b48356a SHA-256: cda9830d968aef45c1aa03a00e92a484a49050dd2cedcd47a1e2cc814f03c11b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=video+editor+ios'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The document also contains a large number of embedded links, many hosted on Shopify, which is characteristic of link farm or SEO poisoning tactics to improve search engine visibility for malicious content. No scripts were extracted from this sample, limiting the analysis of its direct execution behavior.

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=video+editor+ios
    • http://xusidisi.jonathanshorter.com/uploads/1/3/0/8/130873825/muris_xexidimelogu_guvikanovigav_funukot.pdf
    • http://zituzej.microartldn.com/uploads/1/3/1/4/131406507/sibokilijifum-mesepig-piwuburup-xutojirataf.pdf
    • http://mimog.maudink.com/uploads/1/3/0/7/130776716/bokuvasetuluj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/16866494254.pdf
    • https://cdn.shopify.com/s/files/1/0429/0999/1075/files/sarepiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/97789682748.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/balun_balun_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/3107/5743/files/xamojedekiboxetadefirumok.pdf
    • https://cdn.shopify.com/s/files/1/0432/1463/5165/files/19547829850.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/14095444329.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/19683392881.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/12803659551.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/trb_books_for_computer_science_and_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/kipuxuxubejixolitivagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/82679118398.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_off0000800b.bin
b255dc2f10caa7cf961bab1172e8a2d2e5e83e097d684c71f73ac3a8f13737b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x800B 2940 bytes
font_01_sfnt_off00008a89.bin
a8b5bd29433fe1cb4fcdcaf60ded20a2f045fdb0fde4465e599dce6a6c90243c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A89 4224 bytes
font_02_sfnt_off000098f2.bin
60e09097ee9dca146c7758fa3c9dff4fabce552f7f9e57af2a01cbd9f69108b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x98F2 10436 bytes
font_03_sfnt_off0000bca5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA5 4324 bytes