Malicious PDF — malware analysis report

Static analysis result for SHA-256 8864a16a256d9447…

MALICIOUS

PDF

42.6 KB Created: 2020-09-11 05:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86a314663d93555f70e77b38b17221d SHA-1: 89fbfe0fe0bf4fd289dbf6399e9b82df64e228ec SHA-256: 8864a16a256d94473f1ca9d3699836994613e186f22674f129220b9db08151bc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=android+smartwatch+comparison'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the overall structure suggest an attempt to lure users to malicious content, likely for a phishing or scam operation.

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=android+smartwatch+comparison
    • http://files.mooreequineevents.com/uploads/1/3/0/7/130739308/7015087.pdf
    • http://files.lisbonfallsnazarene.com/uploads/1/3/1/6/131606056/181d6f07.pdf
    • http://xizomux.sixpetalsretreats.com/uploads/1/3/0/8/130814328/f4e0b65f86e7.pdf
    • http://nibiv.nvhandsandvoices.org/uploads/1/3/1/8/131871590/c461860.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4587/8950/files/kakiguvipupibisatokugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/70406552296.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/samabutikoto.pdf
    • https://cdn.shopify.com/s/files/1/0462/4144/8090/files/fivafisemozerabebikibuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/xisavez.pdf
    • https://static.usrfiles.com/ugd/1b8612_4daae7edbce5468c96e9745be0c7d76a.pdf
    • https://static.usrfiles.com/ugd/10b11f_1f41875c166748dfa86e5223040e17b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cb7a68ba40f40898af76c2d6bd1c429.pdf
    • https://static.usrfiles.com/ugd/b7ab08_cff1dbee517d4857b418c164bcdb78bc.pdf
    • https://static.usrfiles.com/ugd/9ef1ea_0770ff03b8714a4bbac2dbb84c07af46.pdf
    • https://static.usrfiles.com/ugd/3649d2_ecf272c9bf6849dc970456acb32af6b3.pdf
    • https://static.usrfiles.com/ugd/54fa57_d0c7142a67cb4baa8c8ed96df5812cf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bc57fe92d904c698ebd51c6cf7399c4.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_off0000675d.bin
24aff5fd4106e1461f8ff9fe57400e47a99762a16ffd7597b81055a4db070963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675D 5360 bytes
font_01_sfnt_off00007980.bin
2740fd79e56ed9fb9db70cff3e29fd0cf24efd256a2e71d3df4ab522c532c873		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7980 10548 bytes

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