Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d4219837db5622…

MALICIOUS

PDF

58.9 KB Created: 2020-08-19 16:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31009d6dee739cb238975ca97a9b4344 SHA-1: bf30a8d7888b746bbfb2e61ccf871d302fb3b872 SHA-256: 48d4219837db5622ccf27b0f0d5c4b85bdb578ffc887903075a0e4bab161ce9c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, with a critical heuristic firing indicating a redirector link to 'https://ttraff.com/pify?keyword=3+bedroom+floor+plans+pdf'. Another critical heuristic identified a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links within the document.

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=3+bedroom+floor+plans+pdf
    • http://files.kingcrownmedia.com/uploads/1/3/1/4/131437669/1e2e5a56dd09.pdf
    • http://files.thewaveindustries.com/uploads/1/3/1/4/131413837/a1b902b2.pdf
    • http://merovawe.tunesontuesday.com/uploads/1/3/2/3/132303382/bunokuluso.pdf
    • https://cdn.shopify.com/s/files/1/0432/1319/3373/files/2903095836.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/majemuxonu.pdf
    • https://cdn.shopify.com/s/files/1/0448/6601/1298/files/phylum_hemichordata.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/narojuvikaso.pdf
    • https://cdn.shopify.com/s/files/1/0440/4733/5574/files/byobu_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/31368409043.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1014/files/84892811143.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/holland_house_infant_school_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0450/9207/7731/files/31215042543.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/newomavewoxabadaruduto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/webomobituwisumepepaxifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/84091855221.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/12402530742.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/periodicity_of_physical_properties.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_off00009df4.bin
c69d85764939c82471909322de5abffa8c8f15fca2e90414cc7007cf68b8b484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF4 5396 bytes
font_01_sfnt_off0000b022.bin
f1902935902e887ca336a71d0e01bed916b11c8ebea9cba1d94c20c4d054cc79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB022 14984 bytes

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