Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fed10d8f1da1dc…

MALICIOUS

PDF

84.4 KB Created: 2020-08-27 22:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20a52e5d309b24c989fcc43829dcd3fd SHA-1: 4632c583f47191025a38cad118d417b277e8dfa4 SHA-256: 30fed10d8f1da1dc7161779d543fd24549b50953d69e5b881143875bf2d59624
154 Risk Score

Malware Insights

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

The PDF contains a lure related to the game 'Zelda: The Minish Cap' and embeds a link to a known malicious redirector. The redirector URL is 'https://ttraff.com/pify?keyword=guia+de+zelda+minish+cap'. This suggests a phishing or scam attempt to direct users to malicious content. 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.com/pify?keyword=guia+de+zelda+minish+cap
    • http://vawawibil.elev8tedproductionsllc.com/uploads/1/3/2/6/132682883/pojosuv-gegepetavex.pdf
    • http://files.yourchartersoffreedom.com/uploads/1/3/1/3/131383247/9069909.pdf
    • http://files.coastvalleyworship.com/uploads/1/3/0/7/130775518/5865774.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/gubixikokafotibuzaxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/67238358043.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/bexuwufut.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/vosebetukejenuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/bingo_numbers_1_100.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/rowumigowujiselasives.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/82740720103.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/detect_font_in_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/92121068575.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/wondershare_streaming_audio_recorder_para_android.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_off0001109b.bin
d838fab5dc7c2ef395e3cdc51bf89a46ed0939bac85055c3d1492d478bb450dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1109B 5296 bytes
font_01_sfnt_off00012280.bin
c8fea1687cbb24c8c13384312270dd2dd67521a3aa2609662928c32689fa42b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x12280 10096 bytes