Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce396b3a3de8943…

MALICIOUS

PDF

53.2 KB Created: 2020-08-12 07:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd7fd162f768598145490c6a4ef3e66 SHA-1: 6b419d4b4c17532d3554af3b6d9213163481d729 SHA-256: 6ce396b3a3de894326e5255189c48e97670a353e0736c09f46e6690ecfd8394c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Tratamiento para alveolitis pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous other links, likely part of a link farm to improve search engine ranking 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.ru/pify?keyword=tratamiento+para+alveolitis+pdf
    • http://files.misswinniesabc.com/uploads/1/3/1/6/131637562/mujuruvopemazon_werexipe.pdf
    • http://files.demsofnorthmeck.org/uploads/1/3/2/7/132740435/momixuvowokojem-laxagaxafop-rinezusawaj-famatosejefo.pdf
    • http://sizumel.ivcsudh.com/uploads/1/3/0/7/130739564/757228.pdf
    • http://files.coquelicothandmade.com/uploads/1/3/1/4/131437711/8c108e2bac5.pdf
    • http://files.simplywood.com.au/uploads/1/3/1/4/131407423/8211006.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/balance_de_materia_y_energa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/10239543832.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6565/files/26759560438.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/year_10_mathematics_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/milwaukee_brewers_schedule_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/vejefiwoduxamov.pdf
    • https://cdn.shopify.com/s/files/1/0440/9422/6584/files/mawesaverod.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/c5_9fark_c4_b1c_c4_b1.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/perceptual_barriers_to_communication.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/il_canzoniere_di_francesco_petrarca.pdf
    • https://cdn.shopify.com/s/files/1/0454/4095/8614/files/27194816586.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5190/files/69215262137.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/pobazotupitezut.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_off00008fd9.bin
1b1bd16a3f7258f212c492571eccf6b9e95ff8574390a7e002c9e14ba65cc2f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 5196 bytes
font_01_sfnt_off0000a16b.bin
53d8dd7350f7024373efb540c64998e2d96631cb0eb28200dffb190d5172aa76		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA16B 11236 bytes

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