Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e90a445710b33d7…

MALICIOUS

PDF

47.9 KB Created: 2020-10-14 21:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 31a02618784917d0df333335a962fb26 SHA-1: fdaf0ca2f6820df9021f88f943802b6018fcd746 SHA-256: 4e90a445710b33d70825739c1c284ab2f9fd76c5025eda31ec8966d85adf8758
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as tent instructions. This redirector likely serves to obscure the final destination and potentially deliver a second-stage payload. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm used for SEO poisoning or traffic 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://cctraff.ru/pify?keyword=coleman+cimmaron+tent+instructions In PDF document text
    • https://site-1040259.mozfiles.com/files/1040259/stock_investing_for_dummies_free.pdfIn PDF document text
    • https://site-1043763.mozfiles.com/files/1043763/95221265082.pdfIn PDF document text
    • https://site-1044057.mozfiles.com/files/1044057/24058451189.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/wajarijoladuwamisipipagux.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9031774.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/2434255.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/pesegisekojen.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/4ce065df.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://site-1036941.mozfiles.com/files/1036941/89716223929.pdfIn PDF document text
    • https://site-1042347.mozfiles.com/files/1042347/fojotijokowu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2562/4988/files/lego_minecraft_iron_golem_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9027/2152/files/chicago_manual_of_style_citation_newspaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0258/9094/files/70267546163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8825/1553/files/crazy_craft_mod_list_1.15.2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2501/4173/files/wejudateredibudapututar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6280/2070/files/jaxopova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4384/8860/files/noble_county_jail_bookings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/xaremowuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/88084089933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/420e1ffd-d813-4b30-a86e-bfe738fa00aa/teruxusizem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5396586d-06f2-47aa-be17-cac1ac4fd5f0/gizoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c225bae8-07c3-49bc-b49b-93bff280f7df/gimibojozofitowupalit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05af7958-f0a3-458b-9424-bd1988e6d0f1/29484143611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b8555c1-e053-4cb8-a29b-4307d34b651f/89883867497.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_off00007dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBB 4848 bytes
SHA-256: d3f3bd9510f68d26694160861561e30684ea6e57e47e5decee6320ece2f37bb7
font_01_sfnt_off00008e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E17 10416 bytes
SHA-256: 4a5dffd428d32b443fd56842c3c1c1f76ab0bae6e0b22a55d59bfd0a941c8f9e

Open this report in the interactive analyzer, or submit your own file for analysis.