Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e52002d722b57ba…

MALICIOUS

PDF

36.6 KB Created: 2020-08-11 16:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d339c351a88999564ce84e5a2d2a7baa SHA-1: 2b3b9bd8d5b47be66f86544f1320bba89b8c9c38 SHA-256: 3e52002d722b57bad2ad9a3702a2f834e0a8c83865bf6393613016e5e82aabc5
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used in SEO spam campaigns to drive traffic to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=graphing+lines+in+slope+intercept+form+worksheet+pdf', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to graphing lines and worksheet PDFs, likely serving as a lure.

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.ru/pify?keyword=graphing+lines+in+slope+intercept+form+worksheet+pdf
    • http://files.elegantmusic.ca/uploads/1/3/2/6/132681634/2756454.pdf
    • http://files.saundersvet.com/uploads/1/3/1/3/131380591/lakamikowa-dejibogaxemu-duvuveweto-ripediz.pdf
    • http://tirajuro.theartfulclarke.com/uploads/1/3/0/7/130775734/kukusekuluga.pdf
    • http://files.srflasvegas.org/uploads/1/3/0/8/130874250/1479312.pdf
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/lalepupokogixeze.pdf
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/medical_and_surgical_asepsis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/77273080590.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/55447653864.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/46023265418.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/19593593457.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/pawaripafuzewudosezalarag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/jasukazexesuwovigositovi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3920/files/figijirodozavikenitonezas.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/datuxa.pdf
    • https://cdn.shopify.com/s/files/1/0439/2642/1672/files/web_development_crash_course.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/luwifumolusarerobob.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_off00004fce.bin
f175595fd4f3881ea4e8117d9fda6d940337bb0b8c8d6a85bb8c01a2e610da47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCE 5756 bytes
font_01_sfnt_off00006346.bin
919be9e4239f607e2d768ff191e04e0a6b8f71fd6b3b2712535fd4e778de678b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 9844 bytes

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