Malicious PDF — malware analysis report

Static analysis result for SHA-256 6099edf10f5e817b…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 07:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 286a337a15bac742d9a0f8c31d27d937 SHA-1: 96070720800e020ab69d7e25404834ad8c76ce89 SHA-256: 6099edf10f5e817b38a147e97e392a6a48f85fe3c72208858a6f75655d0ace50
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one to a known malicious redirector infrastructure (ttraff.cc) and others pointing to algorithmically generated URLs. The document body, though partially obfuscated, contains text related to 'indoor air quality guidelines and standards malaysia' and a URL, suggesting a lure to disguise malicious links. The presence of numerous external PDF links, many of which are to benign Shopify domains but some to suspicious ones, indicates a link farm intended to distribute or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=indoor+air+quality+guidelines+and+standards+malaysia
    • http://files.sustainablemaize.com/uploads/1/3/0/9/130969428/vadosun_lomazezenu_bewufanoba_pofuxamotofe.pdf
    • http://vavomig.westspringfieldbouncehouserentals.com/uploads/1/3/0/7/130738693/xibis-pamukutu-jufad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/sewing_machine_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5964/9429/files/67223456036.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/58355630148.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/automatic_control_systems.pdf
    • https://cdn.shopify.com/s/files/1/0454/6845/0968/files/vaxowonuvoxal.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/75300519193.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/mri_anatomy_knee.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/50243214571.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/american_heart_association_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3744/files/7716362592.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005577.bin
255289c3a23914ac879cd182987da7661c597c8d27a6469bb778efedcb8fc01b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5577 5192 bytes
font_01_sfnt_off00006703.bin
6982d710d4aa2e74e4ac35e5cd41cfbc62ea349fdc00feb73f1e361d5578934f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6703 9940 bytes
font_02_sfnt_off000088c8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C8 4324 bytes

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