Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf43412ad783f5a3…

MALICIOUS

PDF

48.2 KB Created: 2020-08-14 14:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d00d3bdeb494f3c62430f14107e31497 SHA-1: c7e996a863868a8caacc7c74b284dd36c961e498 SHA-256: bf43412ad783f5a3cbe559e5c3419548b3f83764add4fb1778e2073d7cfe3c45
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or redirection scheme. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=simple+autobiography+template', indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=simple+autobiography+template
    • http://files.teamworksart.org/uploads/1/3/0/8/130813841/telivutinevamon_pimudo_sobojibamosivi.pdf
    • http://files.yourtcc.ca/uploads/1/3/1/4/131453214/9885697.pdf
    • http://files.williamsburgrec.com/uploads/1/3/2/6/132682745/tagogumolizim_fofuzipupi.pdf
    • http://files.rosannavanmierlo.com/uploads/1/3/0/9/130969974/394c995073d.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/wexalisak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/11555874012.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/xaxudalonulejevedisukovuf.pdf
    • https://cdn.shopify.com/s/files/1/0450/8103/4917/files/emma_msrb_org.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/ap_calculus_bc_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/dubadibotoguxofamolu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3757/0710/files/ramevatumobit.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/zawujogopotebogafelirid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/jewisogopexebatil.pdf
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/searchs_osx.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/87480639786.pdf
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/lomisanogivuxa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e37.bin
2ba6e0c4516ae528974428ab90d2fcb845e31fc6427c3681d976df34e50bf0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E37 6568 bytes
font_01_sfnt_off00007e84.bin
3c9450511574a8bcc4f1f7cfe2f43cda814ac0b27f6ba1c5f2261be170d19e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E84 5400 bytes
font_02_sfnt_off000090b9.bin
f8597863157e53cab581f9359a82e81c9e607e93d448332eafad3affd0f62853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B9 10296 bytes

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