Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e2c27b341bc918…

MALICIOUS

PDF

42.1 KB Created: 2020-08-11 23:34:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23225c10519720b05cf36cf8140801b9 SHA-1: 6f8fea2d4fc25ff1f8adbbc33f41429bad7e27c0 SHA-256: 47e2c27b341bc91823ac00f610eac63bf1fd2c6bcf415f5d46920e9cc167d429
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.com'. This link is presented within the document body, disguised as a summary of 'Batho pele principles'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the target URL. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com', suggesting an attempt to obscure the final malicious destination or to appear as legitimate 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.com/pify?keyword=batho+pele+principles+summary+pdf
    • http://files.jlremy.com/uploads/1/3/0/9/130969710/vavozuzoleg_vilemip_soxowijutuv.pdf
    • http://files.nmcontemporaryensemble.org/uploads/1/3/0/7/130739776/26288.pdf
    • http://files.mrsthurberhistorycom.com/uploads/1/3/0/7/130775969/kudumula.pdf
    • http://bawal.jadavjilab.com/uploads/1/3/0/9/130969057/naxunupubenene.pdf
    • http://files.g-force2818.com/uploads/1/3/2/7/132712661/3716498.pdf
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/rixafin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/98690017592.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/sewunexijof.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/the_cask_of_amontillado_text.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/xorixupoxalosuwakeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5501/files/the_respect_principle_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5967/files/betty_schrampfer_azar_understanding_and_using_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/tozemowuwubijisibufabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/que_es_el_yo_en_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/jejudapojazoribopaxizo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/nofedakured.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/31043944815.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_off00006698.bin
0540351ca60d87b6463d74427aab059fc98c525730157ed45e778cd60bc452bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6698 5544 bytes
font_01_sfnt_off0000794a.bin
e4780664834511aa8d31a2c700041705d2e2b6a420e6b4591c04834c4f800f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794A 10032 bytes

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