Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c65bd98e4d645b…

MALICIOUS

PDF

45.4 KB Created: 2020-08-09 22:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff6ff6ff1a6a281d957a876ff9947e92 SHA-1: cbe86409ebef4efb8a06b814681e78f4893a3a54 SHA-256: 06c65bd98e4d645b741c8598cbd02bf300a471644a79dc9399ce6d4b7b357c79
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=center+parcs+whinfell+forest+map+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the presence of numerous external links and a malicious redirector indicates a social engineering attempt.

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.cc/pify?keyword=center+parcs+whinfell+forest+map+pdf
    • http://juxufogiv.meadowbrookpololodge.com/uploads/1/3/1/8/131871390/zupasigaxi.pdf
    • http://files.apollonasglykas.com/uploads/1/3/0/9/130969775/bidezevirivale.pdf
    • http://rinovof.bendigoartsociety.org/uploads/1/3/1/4/131437462/tukaxapofit.pdf
    • http://files.s1gkusa.com/uploads/1/3/1/1/131164097/wutole.pdf
    • http://files.confed-europia.eu/uploads/1/3/2/6/132681694/683038.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7055/3252/files/vb_net_datetime_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/fekozexedotamivezilekefu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/pobamowaguwel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/61893786514.pdf
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/ankylosing_spondylitis_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81397135942.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9134/files/55623452534.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/33376002982.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/3400324234.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/tratamiento_anemia_ferropenica_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/free_ielts_reading_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/gajaduvemugupiron.pdf
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/class_10_date_sheet_2020_up_board.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006936.bin
c67bbfff4110d9a817129bdb662a81e6bbd5af2a8c20a479e833496a016710b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6936 5392 bytes
font_01_sfnt_off00007b6b.bin
415d8661b8cdc6359721ac953ef79c86db940ce295725af0bc381279aff00d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 14252 bytes

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