Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc89125d027a7b44…

MALICIOUS

PDF

45.9 KB Created: 2020-09-03 02:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8be00fa4586db3b98951da7d42742818 SHA-1: bc882d1ebecbe39f28098f96fb0ddad478c329fa SHA-256: bc89125d027a7b440a536a23330c1c31193181c7af07be6aa72781c004012f08
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.club/pify?keyword=angular+use+template+variable+in+component'. This suggests an attempt to direct users to malicious content, likely as part of a phishing or scam campaign. The presence of many external links, some benign and some malicious, indicates a link farm or redirection strategy. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=angular+use+template+variable+in+component In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5ecadc_2fa5f3d917a440b49e8ca5c7ac60452b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a43ec6_a96af21c99134faf8860b9074d60bbb5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1b7c00_59caaf3d25c14690b2d2229f50d48d59.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dfb5f8_a3bf1b3bd1464daf8978f85fc90fb37e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/scrolling_effect_website_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/vukuzemapifojabagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/agenda_google_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3129/6160/files/fate_apocrypha_light_novel_volume_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8248/files/abdomen_agudo_perforativo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3123/0624/files/gisisidowagabuxego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/62614828143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/4325628636.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5926b4_261ee55bf6e34773b287951d77c5c79e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/724bd4_1166c3c87e0f44e495b061412be8e4f9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_78933278833e4d14aec1e5388937cc2b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/04e6f9_adc976fd5a604f54b357e75d394aaa3f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9b33c5_3ab86e97ab0f4de9a64ee7047e4760af.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 5444 bytes
SHA-256: 9087426ef9e3ae2c835a22588cf5f760bdc2236324c8f0aa46b8c2a6f0f3c785
font_01_sfnt_off000085ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AC 10732 bytes
SHA-256: b5e6fec9e2f23db2b68e081f74ef36fafddc3b04698333ab288268d7c3f811ae

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