Malicious PDF — malware analysis report

Static analysis result for SHA-256 186bf17a87e9b0d4…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 10:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e1f64e872fa6b9fda5dff47781b7b88 SHA-1: 431e17e544ea13748dc5c336f80932c4c04c7997 SHA-256: 186bf17a87e9b0d4a53eeda33fbe62180b0b7090f22faf668ae860ff165cb769
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.cc/pify?keyword=aspergers+aq+test+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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=aspergers+aq+test+pdf
    • http://files.kindertimedaycare.com/uploads/1/3/0/7/130776487/f20f6c0c56f986.pdf
    • http://vafijimu.kylecooper-sportscaster.com/uploads/1/3/1/6/131606875/zozozepawepefogu.pdf
    • http://files.kspaceonline.com/uploads/1/3/1/3/131380868/b7e90.pdf
    • http://files.deltasierracds.com/uploads/1/3/1/3/131382141/zasibevi.pdf
    • http://files.vitaresources.net/uploads/1/3/1/4/131453151/wuxeku_pusobiw_bosojiwiwo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/aryavarta_chronicles_kurukshetra.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/17895583782.pdf
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/maplestory_legion_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7272/files/62342112100.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/90684225422.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/fezixetafuwajajozo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/3341722008.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/jokepezutoxetavezuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/40051269645.pdf
    • https://cdn.shopify.com/s/files/1/0429/8912/5791/files/gmc_sonoma_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4629/5959/files/electromagnetic_fields_wangsness_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/about_config_firefox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a9.bin
a09619afb476797cda38b225f9520cd85625b22bb76eacd742494aa2e95a46cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A9 4816 bytes
font_01_sfnt_off00007507.bin
c8a68de69d37553d8471d7035b24277bf236c2a850ae83c7d55fa8e9821b0d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 10076 bytes
font_02_sfnt_off00009773.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9773 4324 bytes

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