Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6c35ad986dd07a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 12:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 330d494bdd35e0aeef72791262e6b4a6 SHA-1: b4e03f24989a321c5094de8d49f53897fa1794db SHA-256: 5d6c35ad986dd07ad0919be98358f922ffda69bfe6ba0d0262f035c9538183f1
154 Risk Score

Malware Insights

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

The PDF contains a deceptive lure related to "test series for neet 2020 pdf download" and embeds a link to a known malicious redirector infrastructure. This suggests a phishing or scam attempt designed to lead users to malicious content. No scripts were extracted, but the embedded link is the primary indicator of malicious intent.

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/pify?keyword=allen+test+series+for+neet+2020+pdf+download
    • http://files.aghaa.com/uploads/1/3/0/8/130873855/175ce992.pdf
    • http://files.justguystravel.com/uploads/1/3/1/4/131406558/efa8f24fa.pdf
    • http://files.historyisthehook.com/uploads/1/3/0/7/130775888/sopexazidunowi.pdf
    • http://limew.casualcorvettescsra.com/uploads/1/3/1/4/131453278/zowemaxeg.pdf
    • http://files.mazi-reisen.de/uploads/1/3/1/4/131406352/mobamawulujebuko.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9785/7954/files/66601048661.pdf
    • https://cdn.shopify.com/s/files/1/0432/8675/7536/files/bronchiolite_oblitrante.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/kesorazifukovomo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/gumonisulebegunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/60966819629.pdf
    • https://cdn.shopify.com/s/files/1/0436/6997/9289/files/37474852091.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/lemilozokelikilejime.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/fulutorukoje.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_off00006aa9.bin
46dd2538283af64f55682f62fa77eac223db598f1d9940ff1d6f7cf9d146fa04
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 5392 bytes
font_01_sfnt_off00007d1e.bin
e0975d2b743af3ad22a500190bfb611d6dfe1e7f4340a93c0ebd85420ce76c5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1E 10568 bytes