Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c927185601a8704…

MALICIOUS

PDF

56.5 KB Created: 2020-08-30 02:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1d43ca1647989fc82de77033b06fa00 SHA-1: 9b47f3f82d3ee813edadd29708d82a5afe16d21d SHA-256: 2c927185601a8704753dea1daaed00582119af853e9404909e8f51c11b16be4d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to click on what appears to be a flight ticket offer. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger network of linked PDFs, likely for SEO manipulation or to distribute malicious content.

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.ru/wix?keyword=barato+um+voo+de+maneira+ticket
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/dozewo.pdf
    • https://cdn.shopify.com/s/files/1/0461/9675/2534/files/11053702099.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/vabufulalajavevobogux.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/nedodizesu.pdf
    • https://static.usrfiles.com/ugd/b8c837_79a4e57205f04ba58e0393a2ba477be0.pdf
    • https://static.usrfiles.com/ugd/02beb7_4f8d2d7691f24edfbbc93af04f403cdb.pdf
    • https://static.usrfiles.com/ugd/40b9e6_965b2773c02f42eb9b60eb21ee5056cd.pdf
    • https://static.usrfiles.com/ugd/9374a7_1fea05d857874b99b997f2c26defff04.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/24444281387.pdf
    • https://cdn.shopify.com/s/files/1/0452/1931/5872/files/devi_bhagavatam_telugu_mohan_publications.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://static.usrfiles.com/ugd/93c935_d88f0f0c8bae40cd8c0c4b0118376a0d.pdf
    • https://static.usrfiles.com/ugd/7c3584_e912653da44f42838446d379d837158f.pdf
    • https://static.usrfiles.com/ugd/b8c837_eaec37f21ff64c6ca47c91c912292bbe.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/
    • https://static.usrfiles.com/ugd/02beb7_4f8d2d76

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a42.bin
a975399e1653805af9a8be96261ff59ea83a65d8ecb94e2d9c52aec29ff0f43b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A42 5048 bytes
font_01_sfnt_off0000ab5c.bin
332f55cb4c6d8262858d7552018ef6a9598ce33d2a0a6f328216713c454cce06
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5C 13152 bytes