Malicious PDF — malware analysis report

Static analysis result for SHA-256 df76c974cdcbef49…

MALICIOUS

PDF

38.8 KB Created: 2020-08-25 08:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c5f4468a00ef874087c7354aac6a947 SHA-1: cb011c654bdf1cf404553e168990af9498b9db96 SHA-256: df76c974cdcbef49e23e90319aaa06a60ab75224ca39d5474c134447e973abff
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, includes the title 'Constellation cup 2018 tv guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a deliberate attempt to distribute malicious content or manipulate search engine results.

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=constellation+cup+2018+tv+guide
    • http://kefeduvi.magpiepottery.com/uploads/1/3/0/9/130969360/5736930.pdf
    • http://files.aaasteamandsauna.com/uploads/1/3/1/3/131379639/nubataze.pdf
    • http://puxavo.saint-columba.com/uploads/1/3/0/7/130738837/mutanezorogeval_fapexu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/92426329196.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/waxituz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/51467200526.pdf
    • https://cdn.shopify.com/s/files/1/0438/3942/2624/files/southwest._com_check_in.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/nadudofagarakakowatevir.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/punizuxezimo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/9086663160.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057fd.bin
79cfbdba75b26b93f1817e27647b2b0fc3044566872f014069c3d49899042c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57FD 5628 bytes
font_01_sfnt_off00006b3d.bin
afc3285d663bb52a168e5a91ab14acfcce1729086d0158d9d95d69dd64756bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3D 10540 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.