Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d2be2f973d2221…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 06:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e72d7608df79b42a2c57e3b17ccb7aa8 SHA-1: 1643162e3eac3fcc40b61131994166112cba0cc8 SHA-256: 10d2be2f973d2221a2fa94f44a39eb7009ff33410deed7767a8aec6294a1096e
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a malicious redirector, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent.

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.ru/pify?keyword=ad+hoc+reports+successfactors
    • http://files.mysticwatersoap.com/uploads/1/3/1/4/131409557/puvefizefatuj.pdf
    • http://files.rolyart.co.uk/uploads/1/3/1/0/131070351/gegojezejivinene.pdf
    • http://vaziz.thescribblersjournal.com/uploads/1/3/0/9/130969280/pirozuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/lujakisegukovelakewenemuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/20689198483.pdf
    • https://cdn.shopify.com/s/files/1/0430/6327/9767/files/25402341454.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/dunuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/9126/3649/files/57853854297.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/newabexum.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/the_lean_muscle_diet_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/bubble_trouble_2_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0310/0836/files/bigusofanuzerogofusiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/fadukiloma.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/4057001005.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/ditel.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_off0000620d.bin
78ef074c76bc77ad60f9585712b469873a1174c95403d91771ed00eb0bfc74ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 5200 bytes
font_01_sfnt_off000073b5.bin
cb61224a93c03d3dc3d605aaae7c88502511a74055b07011bc4f2d25a033920a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B5 10464 bytes

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