Malicious PDF — malware analysis report

Static analysis result for SHA-256 669bdd79aa3a46cc…

MALICIOUS

PDF

46.3 KB Created: 2020-07-19 23:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51932a401f348199df2304f7b75075a2 SHA-1: 450ebfaacafdba4dae0d889d3e5b4a6d5a5cdd9d SHA-256: 669bdd79aa3a46cccbcb15c91c03900e5ed1f788819eeeb353aae1239c9d6828
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL designed for phishing or scamming related to 'banking chronicle free download'. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links suggests a link farm used for SEO manipulation to drive traffic to malicious sites. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a phishing or scam attack pattern.

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=banking+chronicle+free+download+pdf+2020
    • http://files.leeclarkzumpe.com/uploads/1/3/0/7/130775942/345173.pdf
    • http://files.lorilorion.com/uploads/1/3/0/7/130776886/rutonufitusafam_dagubunazuke.pdf
    • http://files.expressivebodyandnails.com/uploads/1/3/0/7/130740517/wuxexup_pamamu_tedunoxalot_retexepisuwo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/84432915665.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95181885481.pdf
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/47535041728.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/45659384463.pdf
    • https://joguvabevas.files.wordpress.com/2020/07/kegikedaf.pdf
    • https://wijojuwatip.files.wordpress.com/2020/06/89580536594.pdf
    • https://wivezojajut.files.wordpress.com/2020/06/vejefivexesuzesumamedado.pdf
    • https://fuxofifusod.files.wordpress.com/2020/06/movosupoze.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/1862915201.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/volinepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/66669268650.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2150/files/75658117915.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/jujemusoxede.pdf
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/10163966237.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/fipuxibus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/rabofivawedepupalavonerif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nefodegaxinavikiva.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_off00007617.bin
77d924db421212d43bf8334b6d579cd2b930992e937565b429e82f9a6683cead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7617 5428 bytes
font_01_sfnt_off00008888.bin
aa510607e2526fe0f6e5fd6b9793fe6b5c88a2b162664f6ec4f5da9033972fa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 10252 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.