Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bde523bc68e2106…

MALICIOUS

PDF

38.4 KB Created: 2020-08-31 08:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdf667c93a596c49d67ec03212412c4b SHA-1: d3750c9c4b826ad6030e5a1c83975e1bca139683 SHA-256: 7bde523bc68e2106028a2701564e0d4f78997b7b55612afc074c3b7ad1548608
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, ttraff.com, disguised as a Logitech speaker setup guide. This suggests a phishing or malware distribution attempt. The PDF also contains a large number of links to other PDFs, indicating it may be part of a link farm designed to obscure the malicious destination. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attack.

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=logitech+x-+530+setup
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ed64d2_35c7485d48c24fb3bac50211b0f4f7ae.pdf
    • https://static.usrfiles.com/ugd/c63dba_5a5b392e2cd14803a70db02601150c78.pdf
    • https://static.usrfiles.com/ugd/0e2875_a2b826625e9144cbb3a3d645079cfa8b.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_31aed890e1bf466fa7b5f4c779e30190.pdf
    • https://static.usrfiles.com/ugd/ade4e6_00db7f46ee804bea9d4d3e7617e484c0.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/wan_miniport_ikev2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3128/files/certificate_of_incorporation_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/convert_to_csv_file_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0439/files/the_asch_effect_a_child_of_its_time.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/sentry_safe_reset_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/zilakuravizuwodotukup.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/39653589875.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/bulugozuxuje.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_off000057b4.bin
6832682435b2cca7ef6fcbe93c2f910fe0f5cd3a2f5310b8d41629e889a5aa0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 5328 bytes
font_01_sfnt_off000069f5.bin
a04d16b28639b8327d50727bc7cf64d352cf0c4856b297da9416f22073b9e8a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F5 10456 bytes