Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fc3847d983e07e…

MALICIOUS

PDF

42.1 KB Created: 2020-09-03 02:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30cea32f3134b6e75b589512e79317aa SHA-1: 5cda87d95db462f4c4b8316738b2d98d029959fd SHA-256: 96fc3847d983e07ecba448a2107eec1a905e7a17552175b0e78b7cbce75d648b
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links. One of these links, https://ttraff.com/wix?keyword=k%25C3%25BCrtler+pkk+ve+abdullah+%25C3%25B6calan+pdf, points to known malicious redirector infrastructure. The document body appears to be garbled but contains references to the same URL, suggesting it is the primary lure. The presence of a large link farm also indicates a potential SEO manipulation or redirection tactic.

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/wix?keyword=k%25C3%25BCrtler+pkk+ve+abdullah+%25C3%25B6calan+pdf
    • https://static.usrfiles.com/ugd/cec570_04564d5311f3427282bb88887d3133d1.pdf
    • https://static.usrfiles.com/ugd/e33828_d6227b7ae2804336a789f4779dc69032.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_e20ac2cf4d014b31a1e1fde1f7473821.pdf
    • https://static.usrfiles.com/ugd/b8c837_709bbebb40af484b85921a52210b3de5.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_ab652922dd814941ac006892e351984a.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/asics_runners_size_guide.pdf
    • https://static.usrfiles.com/ugd/33ab24_020402070e8746a5b85b9f04af0ff3f3.pdf
    • https://static.usrfiles.com/ugd/704f6c_8d89d3c7cca54069868cf9ae37ea79ba.pdf
    • https://static.usrfiles.com/ugd/3ce946_aa950300f1234cf2b77f22da0f6071cf.pdf
    • https://static.usrfiles.com/ugd/ecec20_091374edf3704e878499001b952dc3f6.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_e633cfe0829e4fd787c9401812b37d1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_48ec684d3f1248b9b2c7d97761c96360.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c233d354fe64dada2b3fdf429ede4d0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c5.bin
1bcc9494647220b220a57d7e79503dd3ae49668d2ac0cc2407cf40577d8332ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x55C5 5280 bytes
font_01_sfnt_off00006774.bin
169a29d99ddbef4dd03127b805c5f4fbfc37cc30cb7e422524254098e7a0e786
pdf-font-stream PDF embedded font (sfnt) at offset 0x6774 11564 bytes
font_02_sfnt_off00008b70.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B70 4324 bytes