Malicious PDF — malware analysis report

Static analysis result for SHA-256 650806710a90b8cc…

MALICIOUS

PDF

73.4 KB Created: 2020-08-25 16:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cab2ef09dc248c0d49f5889fc884a60 SHA-1: a54cfee9d77b624ca93b9c855335760964890f65 SHA-256: 650806710a90b8cc672f9f8777ce97c20ffb635e4f9e7a300bcc33017f99a291
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a strong indicator of malicious intent. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the presence of a link farm suggests an attempt to generate traffic or SEO manipulation. Although no scripts were extracted, the document body contains a URL that is likely intended to be clicked, leading to the malicious redirector.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=campaign+finance+reform+definition+in+history
    • http://files.jhopep.org/uploads/1/3/1/4/131407144/danezu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/ashirvad_upvc_pipes_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/79774779557.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/aris_business_process_modelling.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/alleen_op_de_wereld_boek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/25531742818.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/limutovavem.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/rugeda.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/basic_command_prompt_commands_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/9054/1733/files/18936697151.pdf
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/24424206990.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/sifuwinipetovixadegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/allluia_taiz_7_partition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2460/5599/files/android_9_pie_samsung_a50.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_off0000e075.bin
289dd6a8e111e7f3b897b634b07ceb7fcdff0174d0666c07affb4791055a8264		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE075 5544 bytes
font_01_sfnt_off0000f32c.bin
6781353aff4acc68321e0d8fa60b667306a588c0017a01f6bc36ec8ac69b345a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF32C 10900 bytes

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