Malicious PDF — malware analysis report

Static analysis result for SHA-256 6901490cc7842ca5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-13 23:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31c072acaee2252adfb50b24463f6772 SHA-1: 9a82af6c73ed94ce1720b6fcfc8d8e6b070d4d8c SHA-256: 6901490cc7842ca5660adb798b9e9fdb7dc9376a919f083f14db0c491f575d65
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, `https://ttraff.cc/wb?keyword=food%20preservation%20by%20irradiation%20+%20pdf`, which is designed to lead users to further malicious content. The document also hosts a large number of external PDF links, many of which are benign but serve to obscure the malicious intent. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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.cc/wb?keyword=food%20preservation%20by%20irradiation%20+%20pdf
    • http://files.ramblingmillenial.com/uploads/1/3/1/3/131381204/faguzobugijitop-tipigebukima-vokavisa.pdf
    • http://tosav.mankatofigureskatingclub.org/uploads/1/3/1/3/131383936/ba57866.pdf
    • http://files.energylabnordhavn.com/uploads/1/3/1/3/131398406/fewigizomopafefajax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/gidoxabojumukusevapiwoxim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4528/9112/files/91567363942.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/zologonosupon.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/rf_to_eu_conversion_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0435/3517/1736/files/62122537906.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/fore_bearing_and_back_bearing_in_surveying.pdf
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/63124363536.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/fedusevuxur.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1384/files/jonidofugezoresot.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/lupezuvotubexofudazat.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/sample_of_a_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/all_of_me_piano_guys_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/balopewunapi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/benadavopedejidonoguwemo.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_off000064aa.bin
d621fc5d6ae08d20744c976c27957e10274576b6ba13cfaa791619abbf3bfc6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 5260 bytes
font_01_sfnt_off000076ab.bin
a596e340313f890b5128d980494bbcf0a052e147d8542811fddafb1053437474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AB 9836 bytes

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