Malicious PDF — malware analysis report

Static analysis result for SHA-256 2078bed8fef3e224…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 22:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16f6cd7535de5da61ed69fda49f956e7 SHA-1: 5607c0c0496cbbf1427ccf5c258d3914761fdc09 SHA-256: 2078bed8fef3e224b61c2d826821c622c625a83b445bd0ab270f817fffcfd518
152 Risk Score

Malware Insights

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

The PDF contains a lure for 'latest bollywood movies online 2018' and embeds multiple links. One of these links, 'https://ttraff.cc/pify?keyword=latest+bollywood+movies+online++2018', is identified as a malicious redirector. The PDF also features a link farm pointing to various PDF files hosted on Shopify, with one identified as a potential lure. The ML classifier strongly flagged this PDF as malicious.

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=latest+bollywood+movies+online++2018
    • http://files.thedesignsourceltd.com/uploads/1/3/1/4/131438195/5ec7000f40e.pdf
    • http://mugopafak.magicboundtravel.com/uploads/1/3/2/6/132683328/sisesozir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/tebawiraj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/basic_branches_of_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/kujisejonemeditofepiref.pdf
    • https://cdn.shopify.com/s/files/1/0433/3984/1695/files/platform_9_3_4_filming_location.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/26459973704.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/tipudebawisel.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0597/files/powerhouse_an_intermediate_business_english_course.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/babopewepetefe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/black_hole_temperature.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/jedaxegoka.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/skew_lines_parallel_planes_worksheet.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_off000062a7.bin
70d3e2684cc4004ab91f9737df046d328d09f81a95acdf7cc98f41e5c4c97fff
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 5728 bytes
font_01_sfnt_off00007638.bin
5b858c9e2a3ddb15efdc9b2ac090c6e519f934133c8ec99293790abd94df4b66
pdf-font-stream PDF embedded font (sfnt) at offset 0x7638 10688 bytes