Malicious PDF — malware analysis report

Static analysis result for SHA-256 0adb4acfacf92bc2…

MALICIOUS

PDF

44.9 KB Created: 2020-08-29 02:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2876e584a80da02feca6ff8f28410e7 SHA-1: d07f9e711841689e599741a3b87b180c3a6313a2 SHA-256: 0adb4acfacf92bc25536b88a83637a8937f146a90961ebccc8ceb33c86ca64b5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that point to a known malicious redirector, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that suggests a lure related to 'George foreman grill instructions'. The presence of a large number of external PDF links, many pointing to benign Shopify domains, suggests a link farm or SEO poisoning attempt to improve the ranking of the malicious redirector.

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=george+foreman+grill+instructions+st
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/1225/7952/files/pazuwugopulokomidiraf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4156/1503/files/didazaxakada.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0011/files/39577297367.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b3849618e7f4a28bd5aa3ced0752dcc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ceab100c7ad044f2b9bdfc36ff82f750.pdf
    • https://static.usrfiles.com/ugd/b8c837_680cec348eef439dabd0a506550f8eb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb5d8e9373eb4ad481575361d91ae47b.pdf
    • https://static.usrfiles.com/ugd/b8c837_de06e31410784dde8635aea42a71b47c.pdf
    • https://static.usrfiles.com/ugd/b8c837_64ccf810d82c4e95b00fd7b0f7cf879f.pdf
    • https://static.usrfiles.com/ugd/b8c837_8221df293f34443090efad4619acccae.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9cb98e7aaa244ebb303e8d3e69481bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_82040fca47034121bf26b9c4329ed97c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c3.bin
b9b3605bfa9a50dfabb023e679ad10d95d68640647c082364dbb924c91d5d10f
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C3 5112 bytes
font_01_sfnt_off00007516.bin
9640cf0049cc927e8316996271786bfeedf13c25394533bde34ec579243b70f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7516 10392 bytes
font_02_sfnt_off000098a9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x98A9 4324 bytes