Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f6c19d95a04ae5…

MALICIOUS

PDF

42.5 KB Created: 2020-08-04 21:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5493bf73983304057d621acd857e840d SHA-1: 3842f8f4901225a5db0041626bb18de406f5dfcc SHA-256: 00f6c19d95a04ae5dc517608f3d1df0789e458987dfafef927bc2cb8ec259870
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a redirector URL, indicating a phishing or malicious content delivery attempt. The embedded URLs, including the primary redirector `https://ttraff.cc/pify?keyword=excel+analysis+toolpak+tutorial+pdf`, are designed to lure users to potentially malicious content. The ML classifier strongly supports the malicious nature of this document.

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=excel+analysis+toolpak+tutorial+pdf
    • http://files.africaevangelism.com.au/uploads/1/3/0/8/130874526/8bcef262d.pdf
    • http://files.smellthis.net/uploads/1/3/1/1/131164358/pekadimukoporuvolini.pdf
    • http://files.wintechfrance.com/uploads/1/3/1/4/131407952/6042563.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/44100_vs_48000.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3935/files/62353621877.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/84150675561.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/32068337647.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/eccentric_loading_achilles.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/56758362164.pdf
    • https://cdn.shopify.com/s/files/1/0438/1841/8333/files/quantitative_descriptive_analysis_sensory_evaluation.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/zapabijusukedesofi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kitona.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/78201932783.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/effective_academic_writing_4_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/pacman_death_sound.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_off00006621.bin
3aab746678c21359faa2391ed7cc98bfcbf37f77403e85ac3a8163c490cadbc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6621 5340 bytes
font_01_sfnt_off00007872.bin
fd944e3768cec9f3eed097a15fbb692b9793f618036b892358c873e917ef07da
pdf-font-stream PDF embedded font (sfnt) at offset 0x7872 11016 bytes