Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbe7a54d7059bf8…

MALICIOUS

PDF

43.9 KB Created: 2020-08-19 07:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2da1ac06a02938c085d6475c085fa4c5 SHA-1: 39ecf436b6028a17a258ae82dff10b5e57b2382e SHA-256: 3bbe7a54d7059bf863fbab383887e1d21a8dac1d7d16c2c89023a3b34fdb05d7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a 'Minority report novel summary' and the malicious URL. This suggests the document is designed to trick users into visiting the redirector, likely for phishing or to download further malware. The presence of numerous shopify links, while mostly benign, is part of a link farm strategy to improve SEO for malicious content.

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=minority+report+novel+summary
    • http://pijowugav.yhspatriotbaseball.com/uploads/1/3/2/6/132681824/kijesusugelor.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/79891548634.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/dixewo.pdf
    • https://cdn.shopify.com/s/files/1/0451/3293/9417/files/vocabulary_for_ielts_writing_task_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/16431048607.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/kujedetafujubolexiso.pdf
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/vakowoleloxuveduruti.pdf
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/add_fractions_with_unlike_denominators_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/22524985153.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/lazopasazuxavi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9613/6097/files/suvibulokuvutap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/borderlands_2_game_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/rafeludajogigiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/rupugolorepeloxubigid.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_off00006eea.bin
655a9cc003376059026c4980c3d49139a46d3b1c6395fc25aabfe72e80e459a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEA 5132 bytes
font_01_sfnt_off00008059.bin
b115240f1d10731571326b944fbe532495649a2e26eaa8e49f768f38b92f22e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8059 10104 bytes