Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7a67c1d10572be…

MALICIOUS

PDF

47.6 KB Created: 2020-08-31 15:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c64f956c45178d89b285e1c6f137d91 SHA-1: 6b3cf23a634da08d67a8ee679c6f1b9270374dfc SHA-256: ae7a67c1d10572be606c73292d0396fb8159ede1882436ac75845c1023893dcc
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.me/wix?keyword=bounce+tales++for+nokia, is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites through a link farm, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=bounce+tales++for+nokia
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/wijobegikimupuweji.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/amelie_comptine_d_un_autre_t_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/boxigapibex.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/78171372304.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/47392104461.pdf
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/carduran_xl_bula.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/94413525162.pdf
    • https://cdn.shopify.com/s/files/1/0443/6888/7964/files/fighting_adventure_games_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0447/9470/8117/files/sectarian_violence_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5871/files/birthday_photo_setting_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/que_es_una_medicion_directa_e_indirecta.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/behavior_therapy_for_adhd.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/metezedap.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/recursive_fibonacci_javascript.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_off000063cd.bin
2ffafd779ebcaa06282acf44fd772f09d40ca834fb1ab1fcba409904f4356775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CD 4872 bytes
font_01_sfnt_off00007467.bin
a5706067d7e32dca0b143a1af868ae180ed25b2fef1925eec48088f70e50a98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7467 16300 bytes
font_02_sfnt_off0000a385.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA385 4324 bytes

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