Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f959208d004069…

MALICIOUS

PDF

48.5 KB Created: 2020-08-19 21:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2439b7378bdbc28e63950f838c50106 SHA-1: 203330b73ab8e3aeefb27251c8aaf2c4104a7cc7 SHA-256: 02f959208d00406969aaf6c2df4ec948c1f8eb790dfafa2d1a00b942aac461b2
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=feasibility+study+project+template' which is likely intended to trick the user into downloading a secondary payload. The ML classifier also strongly indicated maliciousness.

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=feasibility+study+project+template
    • http://laligo.ceremoniesbychristine.com/uploads/1/3/1/3/131383434/4763176.pdf
    • http://fugej.nphsjrwolfpack.com/uploads/1/3/0/9/130969341/3438753.pdf
    • http://suwotu.elidaswhippetsandpapillons.com/uploads/1/3/2/8/132815114/popuwoniwor.pdf
    • http://files.jonathanmelvillepratt.com/uploads/1/3/0/7/130740378/874a32.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7763/9071/files/tasozubigapovagepojomavor.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/86272930791.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/broken_vessels_key_of_g.pdf
    • https://cdn.shopify.com/s/files/1/0435/9087/7339/files/805395654.pdf
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/healthy_keto_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/gumakodisitob.pdf
    • https://cdn.shopify.com/s/files/1/0435/6833/2959/files/jawemikuleporokoba.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/assessment_of_cost_accounting_system_in_ethiopia.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_off00007ebd.bin
95105cf4246df5857dd797f80fcb3db39d7d87bd051646b790308c13531eb121
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBD 5492 bytes
font_01_sfnt_off00009150.bin
559a0ff8f1ef4dcc3b75b2a066e619c113df018496394fa77fb775a8228cd4ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x9150 10520 bytes