Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca4eb050e23b756…

MALICIOUS

PDF

43.4 KB Created: 2020-08-26 07:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62766d66620c4e6ba76a35f7a653b96b SHA-1: c8d4512c47d84306cc976896bc70ff4071250d15 SHA-256: 5ca4eb050e23b756236f64dca5ad3d73f9fd371968dfa53b803684bf3b4f5562
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, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body appears to be a lure for song lyrics, likely to entice clicks. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which point to potentially compromised or malicious domains.

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=ennavale+adi+ennavale+mp3+free+downl
    • http://likit.readmyprint.com/uploads/1/3/1/4/131437984/9022898.pdf
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdf
    • http://files.bluepeachesstore.com/uploads/1/3/0/9/130969414/8ba06b8411a221.pdf
    • http://mawole.harrysinkpot.co.uk/uploads/1/3/1/0/131070750/tunogudovevu.pdf
    • http://files.laohulonghealth.com/uploads/1/3/0/8/130813364/worusogo.pdf
    • http:///\/www.paadalvarigal.com\/571\/ennavale-adi-ennavale-kadhalan-song-
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/45663278850.pdf
    • https://cdn.shopify.com/s/files/1/0438/5754/3328/files/49312959727.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9816/files/iso_9001_version_2015_internal_audit_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/gungeon_nail_gun.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/gojetixepeterukaxaralodot.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/vutulegifuzapovo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/52027966071.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/20207614934.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/23749920150.pdf
    • https://cdn.shopify.com/s/files/1/0431/6695/7722/files/kathi_bgm_songs_in_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/lerajuzav.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/topedit.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_off00005cd1.bin
8bf003c686014168a1f97ac7e94f94b4c3598db340e83ba3e4f91376a0c02442		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 5284 bytes
font_01_sfnt_off00006ece.bin
0db238dc6895433398f8a4c584aa43fbb274f40dbdbd9ad7560c668693a34ea0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECE 15968 bytes

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