Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a02b16007288ea0…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 11:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe069814bfd7f2b5b08bc90de455fb4f SHA-1: 7c6aa4aa0a4ccf467d892054dd69f8848f439415 SHA-256: 0a02b16007288ea02af9b167bb71e1b3f8bc641e54525ed359dfc2e104151f50
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-optimized and point to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=basic+electronics+pdf+jb+gupta', which is presented in the document body. This indicates a likely phishing or scam attempt to redirect users to malicious content.

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/pify?keyword=basic+electronics+pdf+jb+gupta
    • http://files.miratorres.com/uploads/1/3/0/9/130969681/mapopotenusubixurom.pdf
    • http://files.healingsoundsofmusic.com/uploads/1/3/0/7/130738814/vudek.pdf
    • http://files.clantonplainsbc.org/uploads/1/3/1/8/131857983/butowenibunaza.pdf
    • http://files.psichicpp.com/uploads/1/3/1/4/131437676/db598b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9943/0815/files/florida_prenuptial_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/53896903148.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/3000_chinese_character_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/direxanipatusulusagunoti.pdf
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/brain_drain_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/zonemenakinowubival.pdf
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/31207283094.pdf
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/48914657284.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/carcinogens_in_food.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/senomi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/buddhism_for_beginners_by_thubten_chodron.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/html_to_php_codeigniter.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/wotifojod.pdf
    • https://cdn.shopify.com/s/files/1/0436/4635/3561/files/boosie_bad_azz_album.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_off00005acd.bin
1b8a90620c03b462486d4380bcd39fcfd67d17a9b76e38ee0624472c3c54772e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACD 5588 bytes
font_01_sfnt_off00006dca.bin
4a89e98beabf2c76f2e57364f3e309b4b5962a3a9421bd960ec58407ec01a432
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 9980 bytes