Malicious PDF — malware analysis report

Static analysis result for SHA-256 189b892fbff2a5a6…

MALICIOUS

PDF

47.1 KB Created: 2020-08-25 04:30:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1867f24592849bfd9a2c68a32ba7139 SHA-1: 7037970b2c01cfa9fddacf544376fcff930adda0 SHA-256: 189b892fbff2a5a621ab2037cee2005555bee1881adc3d274a2aa702dc64a4af
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on Shopify, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bleacher+report+mlb+farm+systems'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and link farm structure are indicative of a malicious distribution or redirection scheme.

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=bleacher+report+mlb+farm+systems
    • http://fidavup.coutret.com/uploads/1/3/1/6/131606490/32a8f9b3.pdf
    • http://vapigupi.saintgregorysileby.org/uploads/1/3/1/3/131380934/kotebogisarisaf-folijoma-rojugizaj.pdf
    • http://files.burnsdayschool.com/uploads/1/3/0/7/130775772/4810633.pdf
    • http://files.strawberrygoosephotography.com/uploads/1/3/0/7/130739971/1477950.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/handbook_of_local_anesthesia_7th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/ielts_writing_band_9_samples.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/40628591233.pdf
    • https://cdn.shopify.com/s/files/1/0432/3924/3944/files/alaipayuthey_bgm_free_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/ap_transco_notification_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/5101/6614/files/wozilowupobokomok.pdf
    • https://cdn.shopify.com/s/files/1/0446/6583/1577/files/western_blot_southern_blot_northern_blot.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/98650827873.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dosodasanofesawule.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/chard_snyder_forms.pdf
    • https://cdn.shopify.com/s/files/1/0462/5157/3402/files/logic_pro_x_rap_vocal_template.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_off00007b68.bin
dece36607898293748a1448c510e2a85111e942c7219d0a3e82ad09a60bc9798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B68 5544 bytes
font_01_sfnt_off00008e1f.bin
ce5d947dad3a6a15ace3bed607bfe354fdf286a03002c3d50c313ce0c8ffa45e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1F 9776 bytes

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