Malicious PDF — malware analysis report

Static analysis result for SHA-256 adce0c46886e84a3…

MALICIOUS

PDF

34.8 KB Created: 2020-10-10 08:37:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dee84844900d7ebdf9f59fd36b9ece7b SHA-1: 1c0a339633c69ce261e30351f638d9e786be9b5c SHA-256: adce0c46886e84a32950aac0e0752d45f7d9c73b736ecbb97e75d3039e893109
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link directs to a known malicious redirector infrastructure at ggtraff.ru. The document body, though heavily obfuscated, also contains the URL for the malicious redirector. This indicates a phishing or scam attempt designed to lead users to 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://ggtraff.ru/strik?keyword=haier+model+hwr06xcr-l+manual
    • http://fedokim.suzannesigmoncouturier.com/uploads/1/3/0/7/130739344/5e22011ed0dea.pdf
    • http://bokol.kilduffmachine.com/uploads/1/3/0/9/130969440/d4211488026b14.pdf
    • http://files.privatetourssanfrancisco.com/uploads/1/3/1/3/131384429/nomamodezenawi-wujidibimik.pdf
    • http://xajofopa.shutupandplay.ca/uploads/1/3/0/7/130775768/labolodujudikenuboz.pdf
    • http://fenanir.aarowsign.com/uploads/1/3/1/6/131636755/a43b3d6b2.pdf
    • http://files.polohouston.com/uploads/1/3/1/4/131453989/lolomusari-zekerikomaduru-sapalitavuzer-gegugutokid.pdf
    • http://files.geekendcast.com/uploads/1/3/0/7/130775309/3342616.pdf
    • http://files.bfmimpactcenter.com/uploads/1/3/2/7/132740445/123be.pdf
    • http://lifan.andilockemears.com/uploads/1/3/2/6/132681647/pamujukamimazez.pdf
    • https://cdn.shopify.com/s/files/1/0436/9186/8310/files/tattoo_coloring_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0476/5152/0678/files/3ds_circle_pad_pro_cpp.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2695/files/fluke_77_series_multimeter.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5646/files/52476172127.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/lake_lewisville_party_cove_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0500/4417/4496/files/riladetibomuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/emergency_plumber_eastern_suburbs.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000492b.bin
339eb7a7f45b38ecb212918d0d8b8306b496fd4f6e25da1367e1bf2dc707732e
pdf-font-stream PDF embedded font (sfnt) at offset 0x492B 5452 bytes
font_01_sfnt_off00005b9c.bin
c1a46013ac35f565ba7b77fa7aef18a76f6589f625e924311cfbb26d64be7cc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9C 10120 bytes