Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0b0023567918ba…

MALICIOUS

PDF

37.8 KB Created: 2020-08-12 18:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b159f9baf1bf2e66fce5cb78bb359bd6 SHA-1: d5ff185a24ff54788ccc4c620b754639d4397f3b SHA-256: 6f0b0023567918ba38007ffe426dbe7313341f8e7d017584f7dc2a936a9745c1
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though obfuscated, contains text suggesting a lure related to 'chemical formulas list for class 10 pdf'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to known malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, many pointing to PDF files hosted on various platforms. This suggests a campaign to drive traffic to malicious sites, likely for phishing or scam purposes.

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=chemical+formulas+list+for+class+10+pdf
    • http://files.sthildascrossgreen.co.uk/uploads/1/3/1/3/131383319/nuradozen-bebopu-vimilefidemafa-gevoxipa.pdf
    • http://bilisi.thegoodlifeheatons.com/uploads/1/3/2/7/132740813/miwapim.pdf
    • http://files.daniel-pratt.com/uploads/1/3/0/9/130969663/fulag_garokere_maziwinomop_xelewuxa.pdf
    • http://files.andylivingstone.com/uploads/1/3/1/6/131606674/a290ae1e7a510e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/pikewupajufekem.pdf
    • https://cdn.shopify.com/s/files/1/0435/7983/4531/files/jurnal_internasional_akuntansi_biaya.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/luwokin.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/73367285078.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/33852769040.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/65774005159.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/mesazisaditefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/tozuxaxidesadema.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/rinogojubelal.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/42334561022.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_off00005680.bin
d614c5ff6c7ec99733808c6bddcecd6cd77fdbc331dd2dfa66aa81a8b43c79cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5680 5492 bytes
font_01_sfnt_off00006901.bin
842217167ee61523157a029fa8b21674d22b3ff1197aae59bd044719582621e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 9788 bytes

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