Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c04e019c5212932…

MALICIOUS

PDF

48.6 KB Created: 2020-10-02 12:35:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8042de48bc60ba7524418ca7f1901a0e SHA-1: e130d34d7c29c46510e7e6b3e405a2ddbb299e8e SHA-256: 6c04e019c5212932bba37ff4e097dc2a37af119a710c41e56674d76e30ff183b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/pify?keyword=saiga+12+gauge+manual In PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/86564166691.pdfIn PDF document text
    • https://site-1038312.mozfiles.com/files/1038312/58166642458.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/16243784053.pdfIn PDF document text
    • http://files.elancommunities.com/uploads/1/3/0/9/130969873/5937c72eb.pdfIn PDF document text
    • http://files.angeecasson.com/uploads/1/3/2/3/132303092/4242498.pdfIn PDF document text
    • http://gowerav.loveandlighthairdressing.com/uploads/1/3/1/6/131636879/xizuxopa.pdfIn PDF document text
    • http://zijaf.ccepotomac.org/uploads/1/3/1/8/131857120/4922037.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/dufuzulezem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/axis_companion_app_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4146/7799/files/66787077066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2130/2946/files/presidentes_de_colombia_1994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0799/4788/files/42737836930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/vagijozonogoziwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7362/8326/files/34289854822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/skechers_water_shoes_mens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3379/1144/files/kanitonawururaxitat.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC2 5020 bytes
SHA-256: 15d98db52d7c494081ea6080bcffb85fc25280a8a7cf0bdf42c9b724bac84c9f
font_01_sfnt_off00007bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCE 10916 bytes
SHA-256: a27501d90e23ba44eccd99e9a2e225b694f70002a271ac9e1dc53259340925cb
font_02_sfnt_off0000a0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0AE 16088 bytes
SHA-256: 03928253ee2cb1fef248e02a9a6434000674c6c2dfc7f61f5290e699cd36adc1

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