Malicious PDF — malware analysis report

Static analysis result for SHA-256 7685fc315da1a213…

MALICIOUS

PDF

54.5 KB Created: 2020-08-14 01:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 314bf6ea312d1f317740e8baaa8ab971 SHA-1: 9bb95611a9b6487d500da2ef54d0fa2e726a1613 SHA-256: 7685fc315da1a21377664d30da605f2c995faa5438e9feee7cef3bca6b673826
154 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to potentially malicious redirectors, indicating a link farm or phishing attempt. The embedded URL 'https://ttraff.cc/pify?keyword=bind+service+android+tutorial' is specifically flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest an attempt to drive traffic to malicious sites, likely for phishing or malware delivery.

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=bind+service+android+tutorial
    • http://files.allnationscoast.net/uploads/1/3/0/7/130740530/3234118e.pdf
    • http://files.pariswritersretreat.com/uploads/1/3/1/3/131382030/3524699.pdf
    • http://files.coldaston.com/uploads/1/3/0/7/130740513/d440e055.pdf
    • http://datomuvo.trainingspaceokemos.com/uploads/1/3/0/8/130874474/pukekozigop.pdf
    • http://files.peoplespotato.com/uploads/1/3/0/7/130738998/5178389.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/nobixozanofetinasidozifaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8097/4490/files/jekifademom.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/vufosinurekixulav.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/crossfire_hurricane_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/3d_exporter_plugin_for_autodesk_fusion_360.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/23830931514.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/xadugakevepef.pdf
    • https://cdn.shopify.com/s/files/1/0454/7385/7686/files/yoga_poses_made_easy.pdf
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/vekojadumabasixoxox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/71136319377.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/nutadavuzijijewawimel.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_off00009838.bin
042ccab8dd54d0021bda6eaf6dcad9c601345e29fed1ab9cc322d7ff2e0b0819		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9838 5040 bytes
font_01_sfnt_off0000a964.bin
b0955e6f9a35c13d06e8b077e028d9cc793cb37c86d42d15616caeffeba2517b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA964 10400 bytes

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