Malicious PDF — malware analysis report

Static analysis result for SHA-256 29cb08974afe7000…

MALICIOUS

PDF

73.2 KB Created: 2020-08-24 06:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec603a42241a3f7618efdbac7970ccab SHA-1: 83eb4f108675a3f1570513839d8da70a2333b95f SHA-256: 29cb08974afe7000da1f9a20dcee1112962c114bc04357a7ac975bfcd24758d0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=c+r+p+f+form+2018', which is likely used to redirect users to further malicious content. Additionally, a large number of links to PDFs hosted on Shopify were detected, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness.

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=c+r+p+f+form+2018
    • http://files.fbtvmin.net/uploads/1/3/0/8/130814337/piganomasitobu.pdf
    • http://files.tmis.us/uploads/1/3/0/9/130969166/f7ed97b25.pdf
    • http://lufunure.takyanyeung.com/uploads/1/3/1/6/131606349/wozapufi.pdf
    • http://rapukal.enlightenedastrologycourse.com/uploads/1/3/1/4/131452938/xigilifire-mujid-kejenemefasodus-gakaregudagawis.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/92345568888.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/simile_and_metaphor_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/mifajojogifew.pdf
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/molovuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/29159530879.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/le_dialogisme.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/cute_couple_kiss_hd_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/77550482444.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/42594678164.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/blouse_designs_catalogue_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/dudikuzorivarovemizerug.pdf
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/breaking_dawn_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/1669/8526/files/28406146608.pdf
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/72360781562.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b62d.bin
2fa8bc4ed0941543cad920d9c540afb48a86b8a3ea67061ab593bdb39569cd91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62D 5052 bytes
font_01_sfnt_off0000c74b.bin
4ba56fd347b34b7d34115ed905929b054b267a97854b16451f1b43263c633b7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC74B 12312 bytes
font_02_sfnt_off0000ef4c.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4C 16164 bytes
font_03_sfnt_off0001049f.bin
aa0329e2e6d0ae66eec489e70abecac9fdbc5ce5a5510d722c8007e2de106a2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1049F 4996 bytes

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