Malicious PDF — malware analysis report

Static analysis result for SHA-256 5accd9004d19f839…

MALICIOUS

PDF

57.1 KB Created: 2020-07-29 20:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63e4204d5a7e8590a3d7f736d2ffa3f9 SHA-1: 58105c95538c8eca371c6c46d76c09c17001bb1d SHA-256: 5accd9004d19f8392bf090492dc8dd9b1ee37d4cd779076be9c58f3082cbca18
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which are designed to appear as legitimate research material but redirect to a known malicious domain (ttraff.com). This indicates a phishing or redirection attack, likely intended to lead users to malicious content or further compromise. The ML classifier strongly supports the malicious nature of this PDF.

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=research+methods+in+biological+psychology+pdf
    • http://files.wallaceandfeldman.com/uploads/1/3/0/7/130775813/kajulinaxuwikup-jerasezejolo-fujifomajavexif-medofos.pdf
    • http://files.hellapure.com/uploads/1/3/0/8/130873810/bibuwakakeviza.pdf
    • http://files.pastorodc.com/uploads/1/3/1/4/131406507/mifuroxilimubi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1018/5637/files/27321384855.pdf
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/80320579555.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/zekibalilosaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/kobazaban.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/8032513245.pdf
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/nenutinexabamosesujunag.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/xowoliterexidugaxosamaku.pdf
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/zovebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tobazarenazuda.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/65982560913.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/bipoletuvulokutikudiziriz.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_off0000a001.bin
dc88013c861bb35c2f30c4ef1ae96d5e2d5e2f6b406359811e06be1a130d46e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA001 5604 bytes
font_01_sfnt_off0000b2ea.bin
d4fedeafad6d66baf3e3c3075de32271d4732eb5924c523891bc94aa383e2dab
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EA 10112 bytes