Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20296492a34ff9a…

MALICIOUS

PDF

41.9 KB Created: 2020-09-19 07:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f96e1cedd6de1dd6832ab202d67da275 SHA-1: f807ad0f608d65c1e34b9bd33fcb3607e2c674e2 SHA-256: d20296492a34ff9a826a4e415321890ae73a098307167e486e58dc1fa3ce46ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link disguised as a download for 'dragon ball legends mod apk unlimited crystals'. This link redirects to a known malicious redirector, indicating a phishing or malware distribution attempt. The PDF also hosts a large number of external links, many pointing to other PDFs, suggesting a link farm used for SEO poisoning or traffic redirection. No scripts were extracted, but the primary malicious activity is the redirection via the embedded link.

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.me/wix?keyword=dragon+ball+legends+mod+apk+unlimited+crystals+download
    • http://files.pft-alexander.com/uploads/1/3/0/9/130969699/7866717.pdf
    • http://fubumalav.yurrugarett.com/uploads/1/3/0/7/130740166/2988953.pdf
    • http://files.angellightreiki.com/uploads/1/3/0/7/130739856/jedugowugofitotunomo.pdf
    • http://susovogok.shotarchives.com/uploads/1/3/1/3/131383982/62489.pdf
    • http://files.stabletransformation.com/uploads/1/3/0/7/130739368/1682878.pdf
    • http://files.dancingravenstoneworks.com/uploads/1/3/1/6/131606003/f1e6d03.pdf
    • https://cdn.shopify.com/s/files/1/0437/0615/5173/files/25019100032.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4307/files/supik.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/gotenopow.pdf
    • https://116dc4c0-ff3b-42ac-bf1e-c55c3c09b363.filesusr.com/ugd/b85eb0_3fc26b409e1b4c9899c369d483bb5105.pdf?index=true
    • https://a2d1e478-5a12-455a-99fb-42cd27a8f5d1.filesusr.com/ugd/760a88_c5487c2eac13428bbf0c4e9bfa1ba89b.pdf?index=true
    • https://67780ae2-7a60-4c90-8966-88e0ff1cb8dd.filesusr.com/ugd/784815_f04e3293482a4beb90c675d89569ca9e.pdf?index=true
    • https://3b068395-a5b3-4d80-9333-08210aaa9411.filesusr.com/ugd/a91264_50f4afea34ed4af2a9a8bd30fd0ed762.pdf?index=true
    • 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_off000063e6.bin
87ab397dcb819ba697ab93770dce432d458314143aaf742b5af1e769ed776af4
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 5788 bytes
font_01_sfnt_off000077a1.bin
bce4de3529576b5a9ce126559febdb3d0e3f6c243bc1707c1151ce792b88131d
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 10196 bytes