Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1da7286877fdb52…

MALICIOUS

PDF

63.6 KB Created: 2020-08-05 14:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fbb0482b74d3f61452b9761d923e45d SHA-1: b60c1b15c106d37d351c8eb97d09b0aa321f0226 SHA-256: c1da7286877fdb52c1eff373f4f9d0f67e4a86422d973a6facc2ad02981abc84
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

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.com/pify?keyword=programma+biennale+cinema+2020+pdf
    • http://files.thepointypencil.com/uploads/1/3/1/1/131163669/xelitopabi-vuruwigibijo-natidogokiku-mexazikatadaf.pdf
    • http://files.lpsconservatorship.com/uploads/1/3/0/7/130739544/mitizorafa.pdf
    • http://files.undisputedboxing.ca/uploads/1/3/0/7/130775845/c003d72.pdf
    • http://files.ps115jamesjambrose.org/uploads/1/3/0/7/130740378/2be2c118ee0c836.pdf
    • https://cdn.shopify.com/s/files/1/0438/6547/3189/files/69603695589.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/tujeposafikomudazexuwan.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/46642862558.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/jawunosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/19442815018.pdf
    • https://cdn.shopify.com/s/files/1/0438/6465/3984/files/77183391120.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/map_of_the_united_states.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4337/files/33467222817.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/insertion_sort_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/12033603740.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0438/5947/6630/files/80254964152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a743.bin
ae8141fc68a449b39396e84b77f8e385f9ca7a0f18c1d17bfe47e84b745c35e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA743 5712 bytes
font_01_sfnt_off0000ba9e.bin
07ed7a9a316c12f504f2328e638df1782a5853a7b23143f926b32fbe470042b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA9E 11068 bytes
font_02_sfnt_off0000ded7.bin
321aa6a53f1200aab853a2ecc331bcbaeea36f787477273e119f9182a4ad4d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED7 4924 bytes

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