Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c9e32aec29d1a16…

MALICIOUS

PDF

38.0 KB Created: 2020-08-30 08:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f12c8399c684f8be0b2e6feef9e0769f SHA-1: 025e82cbbcbdec37628d482c6aefa555c5e2fa97 SHA-256: 6c9e32aec29d1a16fbfd1b4dd74645cc75bf8543513798604c8b23cc4f553e25
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/wix?keyword=goldstein+sensation+and+perception+10th+edition+pdf', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL, suggesting a phishing or scam attempt disguised as an academic resource.

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=goldstein+sensation+and+perception+10th+edition+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/0a052f_300dd4711ff24fce982eb9818f0d4bc4.pdf
    • https://static.usrfiles.com/ugd/dd4472_d15bef64e87a467c8185f2391b460986.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_63e7cfbef0374bf19fecd33c8ff815af.pdf
    • https://static.usrfiles.com/ugd/b4a829_1ce4c4668e334ac388277a9bd8422831.pdf
    • https://cdn.shopify.com/s/files/1/0438/5190/7237/files/brother_hl-_2140_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/didoximiwasiripasixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/45627284104.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/82382936231.pdf
    • https://static.usrfiles.com/ugd/a59130_96b65bad882a442db05c8cc81efc2b8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e85fd2285534310a5655e8580de0c0b.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4325/files/9040917187.pdf
    • https://cdn.shopify.com/s/files/1/0449/6611/7544/files/mutator_and_accessor_methods_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/94081637526.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/adobe_cs5._5_master_collection_serials.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_off0000542f.bin
16542c5034193a477fe8e2eaaee46ef45d6ecae683b422edc7f6f055fbd5a1a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x542F 5468 bytes
font_01_sfnt_off000066cb.bin
20e46aeb632139b65c900bab2a0248777f73c119ea6cfb81a1ff520802a22a61
pdf-font-stream PDF embedded font (sfnt) at offset 0x66CB 10600 bytes