Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bfab44d668bc95…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 09:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f2f6aee91eec9a97c1f7c070aa28b1 SHA-1: 495aeee386e3134c002af736f1cac72fa14285ed SHA-256: 48bfab44d668bc956fa3755138b8791712d83e8e48b2255c1a5c1d70eabe4805
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=rom+randomizer+android'. Additionally, it exhibits a PDF link farm, with many links hosted on cdn.shopify.com, suggesting an attempt to obscure the true malicious destination. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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.com/wix?keyword=rom+randomizer+android
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/51073553930.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/johnsonite_rubber_base_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0285/files/pdf_books_free_download_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/darigawotowifodaxaruvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/ai_ay_a_e_worksheets.pdf
    • https://static.usrfiles.com/ugd/9b5f63_4b5d5aeb71ce4c2eac5f00aa1dfcda49.pdf
    • https://static.usrfiles.com/ugd/9cc572_e3e42f034f31497b9314ad4e13c647a8.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0119/files/data_structure_and_algorithm_objective_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0448/5431/3122/files/valve_actuating_mechanism.pdf
    • https://cdn.shopify.com/s/files/1/0435/5964/9429/files/free_printable_reading_comprehension_worksheets_8th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/xajifaliledisawafam.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/jipokujeroxasiriworozeko.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_off00005bc1.bin
0bdab94002529c500be6d5ac0a49f8b32a41715b812ce5945a2e6fd858098667
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC1 4528 bytes
font_01_sfnt_off00006af7.bin
fe4f4b5e638ed2612bf7ef83d032d1823095bc36f349780063dc9e52f2bbe08d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF7 13872 bytes
font_02_sfnt_off000096e6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x96E6 4324 bytes