Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca7fcfcfa146e81…

MALICIOUS

PDF

54.6 KB Created: 2020-08-28 13:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b5c378bbbb1056e912711d41357e23d SHA-1: 11b69b1b0d52d597423d044530b5bb573f9c0dbe SHA-256: 6ca7fcfcfa146e81b038deead133e9795cc8af1729af0ceca2323cb1c604e42a
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the same query as the redirector URL, suggesting the user is meant to click it. The ML classifier also strongly flagged this PDF as malicious.

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.club/pify?keyword=what+year+did+lucian+the+divine+die
    • http://files.mtpleasantmassage.com/uploads/1/3/1/0/131070362/ab12bbcd2ae.pdf
    • http://parisudop.securevisionmediasolutions.com/uploads/1/3/2/6/132680835/rufavanav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/pigovoxetumijufukaraneda.pdf
    • https://cdn.shopify.com/s/files/1/0434/7543/5677/files/66823936968.pdf
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/xudinolupixewa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2880/5789/files/11155140014.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/neradilavi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/dbprotect_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/robotica_avanada.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/leather_bag_design_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/0120/9251/files/case_files_family_medicine_free.pdf
    • https://cdn.shopify.com/s/files/1/0463/5118/8125/files/relationship_between_honeyguide_bird_and_badger.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5224/files/behringer_x32_digital_mixer.pdf
    • https://cdn.shopify.com/s/files/1/0429/8365/3535/files/kimox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c51.bin
8d0a7ba1976275d7c3fcaa47d183a520820f47867b7dcc415162eda17a22d7cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C51 4796 bytes
font_01_sfnt_off00009c9d.bin
511e3ca85affcdf039f9a5e630cd988639b43af90e09ee983640a4cd7ba8d64e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9D 10052 bytes
font_02_sfnt_off0000bec0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC0 4324 bytes

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