Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bcfbe295619247f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 06:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb2eadf8acb6aec248f1e6accb0bb73f SHA-1: ee26d37addaab5d3aa5ff074db351528b220a7ae SHA-256: 4bcfbe295619247f54a4c6773638634b1eda0dc4b091e2dc322bc95a5d9d102d
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.com/pify?keyword=2020+budget+ghana+highlights+pdf'. This URL is likely used to lure users to a malicious site. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, some of which are hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=2020+budget+ghana+highlights+pdf
    • http://files.coloradokodaly.org/uploads/1/3/2/3/132302732/24480bddc062c.pdf
    • http://files.mindscapegallerystl.com/uploads/1/3/2/6/132683111/1329c.pdf
    • http://zavunefo.cityoflathrop.org/uploads/1/3/1/3/131398560/21a67d3dc6.pdf
    • http://files.truurelief.com/uploads/1/3/1/1/131163578/2485848.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/38829427897.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/82557954060.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/bersa_380_plus.pdf
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/stardew_valley_explosion.pdf
    • https://cdn.shopify.com/s/files/1/0428/8980/5983/files/68377166608.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/kikamodanomakefigujijowa.pdf
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/fufodome.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/6704830646.pdf
    • https://cdn.shopify.com/s/files/1/0431/7888/5280/files/98516290806.pdf
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/operational_problems_in_activated_sludge_process.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/github_create_empty_branch.pdf
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/79054691618.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/barth_commentary_on_romans.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_off00006890.bin
04d1403c2d2055e550d09e49bc7dcce5e0df6b5a6e36df4392cf86c2e828788a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6890 5528 bytes
font_01_sfnt_off00007b44.bin
22c8295184bd6ee0d3a3fdc6f47df716c3d59cbc00bf52dba0840df1bf70dfd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 10472 bytes

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