Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c01a900ba704a0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-28 10:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 423f13edb2be1c67187f5a17edd89d43 SHA-1: c6de8f8c2f7223f8368588bd55a1eb3e1bc62667 SHA-256: 68c01a900ba704a000d2fb3729f2d8efcb27b8438186cc9e5d394efd05560cb7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one prominent URL identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Lego batman red brick locations' to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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=lego+batman+red+brick+locations
    • http://panudatot.joekimgroup.com/uploads/1/3/0/7/130739723/a2b80bdb3.pdf
    • http://files.northportcarpet.com/uploads/1/3/1/3/131382078/2db4601.pdf
    • http://files.yarahtraining.com/uploads/1/3/0/8/130874431/xewijopisuxuzaw.pdf
    • http://durijadeb.mriteacherresources.org/uploads/1/3/0/7/130776791/2112372.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/4829658130.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/53750599829.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3287/files/sigafarerujesejelum.pdf
    • https://cdn.shopify.com/s/files/1/0461/9767/0037/files/parixufobepal.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/74_el_camino.pdf
    • https://cdn.shopify.com/s/files/1/0437/1746/0120/files/detetajapor.pdf
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/companies_act_2006_directors_report_contents.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/vaxedutarebewumemafosu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/kreenig_snarlsnout_wow_classic.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/97765466955.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/vumabonizexata.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_off00006514.bin
12b97be76ee50ad55de00565c490d06f657e22f44236c6ece08822a2a0286bea
pdf-font-stream PDF embedded font (sfnt) at offset 0x6514 5404 bytes
font_01_sfnt_off00007761.bin
cf356deb0dccfb04ba893f0da8f008b4ce8ca81315faba249b32590e457ccced
pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 10012 bytes