Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd162c02d2aa5a22…

MALICIOUS

PDF

44.6 KB Created: 2020-08-19 15:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f834a16be06a92590c4169e106df248 SHA-1: 8d24abc6b6b6c94b8fd96b5cf441d23c2e6eefca SHA-256: bd162c02d2aa5a22cf24f95228b95a3c1c6858288ae4d7c234beb1293171e870
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that redirects to a malicious URL, disguised with text related to a movie download. This indicates a social engineering lure to trick users into visiting potentially harmful sites. The ML classifier strongly supports the malicious nature of this PDF. The embedded URLs suggest a link farm or redirector strategy to obscure the final malicious destination.

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.ru/pify?keyword=adithya+varma+full+movie++in+moviesda
    • http://files.hatterasarchives.com/uploads/1/3/2/8/132814024/700639a.pdf
    • http://lonozelix.mummamovement.com.au/uploads/1/3/2/7/132710621/9776474.pdf
    • http://files.annact.com/uploads/1/3/0/7/130740053/verekisulupapabis.pdf
    • http://zovok.landertigerfootball.com/uploads/1/3/0/9/130969596/f3fcb71d3ce.pdf
    • https://cdn.shopify.com/s/files/1/0437/6857/8210/files/thinking_in_java_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/63199081390.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/blade_2_soundtrack_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2391/6443/files/atividades_de_alfabetizao_em.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/27999034121.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdf
    • https://cdn.shopify.com/s/files/1/0450/8686/7621/files/medical_definition_of_disease.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/jubijoloz.pdf
    • https://cdn.shopify.com/s/files/1/0446/4685/8915/files/liwewadivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/brooklyn_navy_yard_map.pdf
    • https://cdn.shopify.com/s/files/1/0436/4890/9462/files/airman_ga_taosenai.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c57.bin
62c7fc82c8b8b29b68fbe5df7cdd5de41c4b1145a36819ece12ce70108f92aa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C57 5300 bytes
font_01_sfnt_off00006e42.bin
46ff2b04381839f07416989dd955dbf4886b898d6bc8d8b64266e0e4b1ac287a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E42 4580 bytes
font_02_sfnt_off00007f90.bin
e5bd58e1a02029d1a1bff0eef8f3afc7bb0efa929fe107408f3178193a813581
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F90 10984 bytes