Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad86a723c40e214…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 07:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9417710bd8cdf9b941fb68184d7c7f34 SHA-1: 913344a31fb9718c3dee2145e7250c1f01449a3b SHA-256: 6ad86a723c40e2141800bb8399daee41037e8bf0293ee75e51c4e93b4ab43146
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector. The document body, though obfuscated, contains the string 'https://ttraff.com/pify?keyword=radarscope+3.+7+apk', indicating an attempt to direct the user to malicious infrastructure. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=radarscope+3.+7+apk
    • http://files.jandlcustomupholstery.com/uploads/1/3/0/9/130969356/b5251e3.pdf
    • http://files.davidjsimpsonart.com/uploads/1/3/0/7/130776819/mumoxineruf_josite.pdf
    • http://files.littlehandsomez.com/uploads/1/3/0/8/130874120/e9c4124d3ff4b.pdf
    • http://files.reditusministry.org/uploads/1/3/1/0/131070560/85abd3a7f8246.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8722/4214/files/56415741198.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/devopoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/forumamebavodifolegitu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/tesulorora.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/gisofap.pdf
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/46963775491.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/47094872434.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/4649178203.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/problemas_de_caida_libre_fisica_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/importance_of_job_analysis_in_hrm.pdf
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/die_bremer_stadtmusikanten_text.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_off0000602f.bin
ca750f618864081d3904c376242a9176ecaed08cba5d83136152c63a8a7a5208
pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 5384 bytes
font_01_sfnt_off0000729d.bin
58f302388cc48774800cd13c844ba3aeebf1444f9cc87d463695776c10753ecf
pdf-font-stream PDF embedded font (sfnt) at offset 0x729D 10300 bytes