Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0913f4c24ceb76b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 17:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 581e461f12d77b8810308f14a656f9cb SHA-1: 6346b04a68f21911c5bf112c225014352b715d40 SHA-256: d0913f4c24ceb76bc9262d42245108d0baca13c0ca1cefc611fecb1a6965aa3d
140 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to known malicious infrastructure at ttraff.ru. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to download further content. The presence of a callback phishing lure heuristic further supports the malicious intent.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=burp+suite+tutorial+for+beginners+pdf
    • http://files.eugenechislenko.com/uploads/1/3/0/7/130740530/4169637.pdf
    • http://files.molliesmorsels.com/uploads/1/3/1/3/131383319/ledabuja.pdf
    • http://files.miguellevy-paintings.com/uploads/1/3/1/4/131414134/zusore_bibibazig_kopevek_wokitegako.pdf
    • http://files.therapists4u.com/uploads/1/3/1/4/131409309/lejosepeb-jedit-jaxuwiperorejek-bolaxeko.pdf
    • http://tupotoroj.doublecinspection.com/uploads/1/3/1/4/131437601/wegojuxexofulov.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/arabic_urdu_dictionary_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/jurnal_asidosis_respiratorik.pdf
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/awesome_ukraine.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/grammar_activities_for_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2389/files/lirurimuvasipupefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/wexalisak.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/murawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/gst_tax_slab_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/46799032459.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/guzabunozuzizufab.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_off00006481.bin
9260aa01df7ea2a94b3097d0fbe0c8335ef0bd0017a4697e8e1199026ef6bbb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 5396 bytes
font_01_sfnt_off000076e7.bin
4bca1cdd53421edfb6ed703ce65549c743c8b90b95bd774be134995c776f71e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E7 9956 bytes