Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3bde109dea383ac…

MALICIOUS

PDF

50.8 KB Created: 2020-08-16 21:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d5450cfedc2c51600d9e1c43fe310c2 SHA-1: 30a0be8faa6fb9c2252370e3676bc902d8af765a SHA-256: a3bde109dea383ac1c45fc19fd0804c24ce86aaa994c3c147f895dfda2b447af
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating a malicious redirector. The document body explicitly contains the URL 'https://ttraff.com/pify?keyword=free+powerpoint+templates+for+technology+presentations', which is likely intended to trick the user into downloading a malicious file or visiting a compromised site. The presence of a large number of external PDF links also suggests a link farm, a common tactic for SEO poisoning to attract victims.

Heuristics 3

  • 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.
  • 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/pify?keyword=free+powerpoint+templates+for+technology+presentations
    • http://files.elephanttracks.net/uploads/1/3/0/7/130739369/bukulajuxi_zixovonali_fuseno_vabebokel.pdf
    • http://files.standabowl.com/uploads/1/3/1/4/131454560/2293296.pdf
    • http://bamis.kaitlinbellamy.com/uploads/1/3/2/7/132740214/1646407a4f395.pdf
    • http://files.meigrayselect.com/uploads/1/3/1/3/131380847/392b9aa74299630.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/alter_ego_2_plus_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/62670197539.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/electrical_engineering_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/burglar_alarm_project.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/email_etiquette_pdf_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/wunemamosunakixesez.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/36971423372.pdf
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/pikawekexarumofis.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/51725840379.pdf
    • https://cdn.shopify.com/s/files/1/0434/1946/7943/files/calendario_mondiali_calcio_2020_da_stampare.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_off000082ae.bin
685449eb072507a863e0a7fcf18d781f2befa8f98b8ff56a292520b82a9ae153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AE 5580 bytes
font_01_sfnt_off00009590.bin
3e6174015160c10d078e9793ca884b084fa22d6cdfec05307d77862dac5b0df1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9590 12788 bytes

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