Malicious PDF — malware analysis report

Static analysis result for SHA-256 566b23eef1b0987c…

MALICIOUS

PDF

47.8 KB Created: 2020-08-24 07:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 196f426e3f4ce62acfe3f274a751d28d SHA-1: 0f472ed7a8ccfa72352917d6971d531901651444 SHA-256: 566b23eef1b0987c78cfb4ebf55be9fbbf172472083ea8b2adfe1b4f8567ad21
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document's primary purpose is to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=new+bengali+movie+2018++300mb
    • http://files.devotionfarms.com/uploads/1/3/1/3/131380894/solis-wozetiwoketofa-vusetamu-wotixe.pdf
    • http://zavoxem.chisholmjohn.com/uploads/1/3/1/3/131384536/7eb2068684b6.pdf
    • http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.pdf
    • https://cdn.shopify.com/s/files/1/0431/4818/1666/files/33321907504.pdf
    • https://cdn.shopify.com/s/files/1/0429/4616/6943/files/adverbs_comparative_superlative_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/acrolect_mesolect_basilect.pdf
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/27944006426.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/xagixexidevasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2825/8726/files/free_anti-_malware_antivirus_and_spyware_removal.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/zetumitotunuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/58244078239.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/54220543827.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/45998094999.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b43.bin
bce2714c76cba732eaf4784be41a78b7c7e6163668fadf34fadded2ccae83eca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 5676 bytes
font_01_sfnt_off00008eb1.bin
ce5940bb3b83f0fa34a1fc8dfab72c7ae78ba52d106f54b12cb21f80dfb7538c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB1 10672 bytes