Malicious PDF — malware analysis report

Static analysis result for SHA-256 720b41e05a5f5533…

MALICIOUS

PDF

32.6 KB Created: 2020-09-01 14:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ee81921d61a9d09c8c1b094d5510dd0 SHA-1: c19306e74d1ec5f7398cab52c0542c75c4c3139e SHA-256: 720b41e05a5f5533345ea2a7adaddb683d2834ad1afaa558016fe81aa61a78f2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm and a redirector URL, indicating a phishing or scam attempt. The document body, though partially garbled, includes text related to 'DIY lip balm label template' and the malicious URL, suggesting a lure to a malicious site. The presence of numerous external PDF links further supports the classification as a link farm, likely intended to drive traffic to malicious infrastructure.

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/wix?keyword=diy+lip+balm+label+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/56465026624.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/idsa_guidelines_neutropenic_fever.pdf
    • https://cdn.shopify.com/s/files/1/0431/0568/1557/files/kojibarizopiwojifonare.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/nainital_tourist_guide.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_de4f05b99e97457d993a6351bd3d56cb.pdf
    • https://static.usrfiles.com/ugd/5438e3_4acfae0a988049b6b44de5212d5148cd.pdf
    • https://static.usrfiles.com/ugd/a467d2_83ecdccc61054d7c8b2b02fc09d3ac8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb3f081d440445e785ead5b9b7aed636.pdf
    • https://cdn.shopify.com/s/files/1/0434/4230/7239/files/besupela.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/68975757689.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/71672484674.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/89311046974.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_off000043dd.bin
e10febc196942f1f4aa33f3fb47df7623f064b8383304133eeeae201ce21fc10
pdf-font-stream PDF embedded font (sfnt) at offset 0x43DD 4932 bytes
font_01_sfnt_off0000549f.bin
1048653340327299c46eb817085c2c11943ec9d1d8cabf463a64421d188c60a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x549F 9756 bytes