Malicious PDF — malware analysis report

Static analysis result for SHA-256 69434837d4416208…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 21:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6d8850d5eeaaeeb3ea84325cac3ab00 SHA-1: 71395bb80017f27e1315d6b8f631dc7fe6a72ffd SHA-256: 69434837d44162080ef7f20f8c00d0e1ea3a83fc4d3976b20acf9367aaa5a765
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, `https://ttraff.cc/wix?keyword=sarvavyooh+raj+comics+free+download`, which is designed to lure users into downloading potentially malicious content. The heuristic `PDF_SEO_LINK_FARM` indicates the PDF is part of a larger network of links, suggesting a coordinated effort to distribute malware or phishing content. While no scripts were directly extracted, the presence of embedded URLs and the malicious redirector strongly suggest an intent to download and execute a second-stage payload.

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.cc/wix?keyword=sarvavyooh+raj+comics+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b0b521_d64e7fb1b00447778957c448c7925136.pdf
    • https://static.usrfiles.com/ugd/defcb2_7405272b89194d299753741c8107c76c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f1025a04ad5401f862ceab7ce9da77f.pdf
    • https://static.usrfiles.com/ugd/7f46b5_195063b1f7f24ba898e904b53cdf0a2f.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/xogapenani.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/bunonudu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/ralafibaz.pdf
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/coraline_2009_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/deled_assignment_page.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/english_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/methods_for_statistical_data_analysis_of_multivariate_observations.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_off00007222.bin
8d119463a255633d487cc3bcbb08be29e42d5faf486178d79cba45d9a4dc3a41
pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 5692 bytes
font_01_sfnt_off0000857c.bin
27dfcf57338e4cf1b7978fc0ffb73fccbe93209bd00feb643454c731431dfc33
pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 15516 bytes