Malicious PDF — malware analysis report

Static analysis result for SHA-256 7233d938ce968db7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-21 06:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c34335d5f56e1357f58a0b57d8933c9 SHA-1: 130db2d39484035cb8d91ecf3cb5c1d937f732ec SHA-256: 7233d938ce968db7adde16013f1cb7dc73338db3fcd59a5dccee62c314f0bdb3
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, suggesting it's part of a phishing or scam campaign. The document body and embedded links point towards a lure related to 'Plague Inc hacked apk pc', aiming to trick users into visiting malicious sites. The presence of numerous external PDF links further indicates a link farm strategy to distribute malicious content.

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=plague+inc+hacked+apk+pc
    • http://banosabuz.nicolenaro.org/uploads/1/3/2/8/132814930/8627702.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/techos_verdes_tesis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/4915/4720/files/air_force_y_group_previous_papers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/wipurezanewafegatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/arraylist_set_method.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/39141708267.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0919/files/73633990917.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/71945616995.pdf
    • https://cdn.shopify.com/s/files/1/0440/4389/4934/files/44945453874.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/30636608359.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/setikunemigirelanol.pdf
    • https://cdn.shopify.com/s/files/1/0450/1517/1236/files/bridge_to_terabithia_final_test.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_off00005f6b.bin
1305a03ac18b51af314d27b73843f7281c27e02bc8c0f06b160bae23113837aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B 5128 bytes
font_01_sfnt_off000070cf.bin
921bb46186f83502f4d8e96d214c5aa3e5c4aa1584a0a91037e3fc0cd09315ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 12732 bytes