Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d3500df3c55052…

MALICIOUS

PDF

50.8 KB Created: 2020-10-02 20:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8acc6b2eeafc72a5ff4d5ba871e14cd0 SHA-1: 654ac91ab78bbf04d5e7280dcfa0b8948bac9ead SHA-256: e4d3500df3c55052299c743d2a289cc7fc1ecf5ef722efc2e64832aa26c75ec4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary malicious URL, 'https://ttraff.club/pify?keyword=the+addams+family+broadway+script', is identified as a redirector. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to direct users to malicious infrastructure. The presence of numerous PDF links further supports the 'link farm' heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/pify?keyword=the+addams+family+broadway+script In PDF document text
    • https://site-1036867.mozfiles.com/files/1036867/65301781202.pdfIn PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/daludafukomidujobovezi.pdfIn PDF document text
    • https://site-1041761.mozfiles.com/files/1041761/febixuvafifaligebisuwuxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/58671458294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/parker_auto_credit_cda_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/muvivojukevezapixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/mutosenogajexovibegom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ef555c2-90b8-41d9-ab80-cabef88ebe72/mifuwofalij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46200191-c893-4d30-adcc-d0f765379d16/fefunobodabetediguro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14487f41-faf7-4bbd-b6c2-727e7372462f/dafaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd45007-ec21-48da-adcf-a1b6145a052e/87176234048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f54e9716-1aed-4191-9a6c-3ef9d840c100/47728677555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/vipalulerizajotedowadok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4209/8337/files/the_dark_descent_of_elizabeth_frankenstein.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 5360 bytes
SHA-256: c74ac723ac1c0ffbeaedb69f2fbfe06f4b2bad856c04c47ed1a0b93a93f93948
font_01_sfnt_off00008d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D42 10132 bytes
SHA-256: 1a48d41b56999a32defe3b618752dc45309588d51c6bb4e88140ab532ba593c0
font_02_sfnt_off0000afc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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