Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dafcdb709d287c8…

MALICIOUS

PDF

56.7 KB Created: 2020-08-05 01:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dc2d4d2e1bfaef823457fd868fc6d36 SHA-1: f5b5f00954489d6dd11e9656ca4cb999f25850e7 SHA-256: 5dafcdb709d287c8951a5f8e37cbe3414b130737c5ede36ceb6d08104012687c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=awakening+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are to Shopify domains hosting other PDFs. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious infrastructure via a deceptive link.

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/pify?keyword=awakening+book+pdf
    • http://musaf.lean4teensllc.com/uploads/1/3/1/4/131482995/sinizagop-mimef-fojej-fuvibulo.pdf
    • http://files.artisanbuildersconstruction.com/uploads/1/3/2/7/132712332/vozevujigufunujigo.pdf
    • http://files.cobblandmarks.com/uploads/1/3/1/8/131856065/bijanotebatufu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/65711543684.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/kojejezedotajutevebe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49090326843.pdf
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/wupopaxamivezegigotoba.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/59827074514.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/how_to_checkout_a_branch_from_github.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6117/files/63612139520.pdf
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/86046875456.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/82392223444.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/paninaditizerebos.pdf
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/outlook_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/44158994532.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_off00009f25.bin
154fa96a07b5fe0b4cb38a1ae54dfc1b01a13258f09a9808085e08906751e4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F25 5188 bytes
font_01_sfnt_off0000b0fc.bin
a66fcba6f775c8dfb49d0b029d43ad26dabf8d69d7be842bab338915a9196bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0FC 10892 bytes

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