Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7d1469cca07fe3…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 18:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b4cd6e0ff2c4bf3b7ae4563369cc73 SHA-1: 2c8bab775eb824bd4f0ad100244aa5459abdc16c SHA-256: 5b7d1469cca07fe39c17adc7453953ca5a06336b711489be3544dbd36ec58bbe
162 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying it as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'project meeting cadence template'. The presence of embedded links and the ML classifier's high confidence suggest a malicious intent to redirect users to harmful content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=project+meeting+cadence+template
    • http://jukisepi.thingsgreen.com/uploads/1/3/1/8/131856318/kumibevisa-xoraluverubadu-pezuxisu-tigukoguvuzi.pdf
    • http://bivopo.capitalarealiteracy.org/uploads/1/3/1/3/131381435/1973292.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/the_jinx_watch_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34996744553.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/gaporivugowomivuxutew.pdf
    • https://cdn.shopify.com/s/files/1/0436/9996/2024/files/3856444844.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3834/files/all_falls_down_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/non_chronological_report_examples_volcanoes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/kugesorasowufozusuvel.pdf
    • https://cdn.shopify.com/s/files/1/0440/4330/5110/files/kings_of_leon_pyro_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/29035722627.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_off00005b3c.bin
af29fa11d559da9e6097e8e2416309dcae7d4d075210d1c827f4aa62e676a2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3C 5292 bytes
font_01_sfnt_off00006d21.bin
de73fa1f68a6c97ab453e5fd7a6d067e91b96085b2fcfb90b9dee410a215a4ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D21 9952 bytes

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