Malicious PDF — malware analysis report

Static analysis result for SHA-256 9546bf445319ed43…

MALICIOUS

PDF

43.3 KB Created: 2020-09-03 09:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd29daa9447e1873ea1acf2f1bafbf23 SHA-1: 52ef0dde8a1942cf3a6879d52e5d6b544ab0c9ca SHA-256: 9546bf445319ed4352d8ea6fb03bf52e88febea90a994722cada50110b97b658
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=booklet+templates+for+microsoft+word'. Additionally, it exhibits a PDF link farm with 16 external PDF links, primarily hosted on cdn.shopify.com. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern appears to be SEO manipulation or distributing further malicious content via a link farm.

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.me/wix?keyword=booklet+templates+for+microsoft+word
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/51858906226.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/40829725144.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/dainik_bhaskar_epaper_raipur_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7065/1558/files/66912691052.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5961/files/35677029485.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/acquisitions_incorporated_download_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0465/7581/2775/files/menorrhagia_nice_guidelines_quick_reference.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/jeweguripapibibezizupax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff72808bf56a467499be93704337857a.pdf
    • https://static.usrfiles.com/ugd/b8c837_51d76e8191ad4e54acb8116c35b0e87a.pdf
    • https://static.usrfiles.com/ugd/1849a1_e6ac87dfb3614d8886e9baa1ace112bf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8285/files/zener_effect_and_avalanche_effect.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/namarudilewe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/amlie_nothomb_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1419/files/diwaxesesoki.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_off00006aa8.bin
5256356e3e3b788f7261536c75becc5f9b3d5dc809c6361bccc46941fae90e06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA8 5504 bytes
font_01_sfnt_off00007d60.bin
fefdc3f730d62f26af3a3d3f8014fff370e7b8cb82bc584c6459629396fdc855		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 10156 bytes

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