Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7ce57f2d0d9954…

MALICIOUS

PDF

46.6 KB Created: 2020-09-01 20:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16c5c5a07581098e97fa1b9db6b74486 SHA-1: ab09b1248be1417eb9bcb64ff9e6f6fab06a74c8 SHA-256: 5a7ce57f2d0d99548f3ca37e7bd0d269f4f2f7f6bbc4f4a5ee26c2bbff91ba4c
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, masquerading as a user manual, which is a common lure for phishing or malware distribution. One of the primary links directs to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=canon+printer+pixma+mx492+user+manual'. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect the user to malicious content, likely leveraging a PDF vulnerability or social engineering.

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=canon+printer+pixma+mx492+user+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/0ad6c7_0064a5c59d3d4e8cbc981179d7a92469.pdf
    • https://static.usrfiles.com/ugd/eb4c03_ba5966daa9e543bbabce5577ec9d8b7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_36865808e3de48bf84b4df5d9636c6a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc64a79bd1e343d5a31e14258736a2f3.pdf
    • https://static.usrfiles.com/ugd/5ecadc_f6216735bfb648368690541839346aae.pdf
    • https://static.usrfiles.com/ugd/2074c9_be1e34354155441cb513baf2ecf6ee3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_109c11e779594eff83c1b5f4ee0ce557.pdf
    • https://static.usrfiles.com/ugd/b47706_f7ef8e514a524078a601229c85c3e032.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/60264851655.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/fonigaxuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/farowefub.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/worajumukolusijibevux.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/ek_chiraiya_ghosle_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/mulivavufoxan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/zunozaxep.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_off00007804.bin
45a1611d24d89757194ee299e7508d1baf8c4b606593a1d53493e2e937a68dee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7804 5312 bytes
font_01_sfnt_off000089ff.bin
567a5bf3c2af086ff413698967a41175c09b4d727a169b4f78ae81e5d53b338c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89FF 10436 bytes

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