Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c42cc04ab784d26…

MALICIOUS

PDF

37.6 KB Created: 2020-08-25 20:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 849c23d2b1b313cc65f8b454dba488a6 SHA-1: 2a5d856fa376b7edd2eda01086a1a6a7fe8924de SHA-256: 3c42cc04ab784d26072d78ca28e7d58bd6d37f704fa125f6216533e7c41547ce
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to a guide and a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.ru/pify?keyword=symptom+to+diagnosis+an+evidence-based+guide+2e+pdf
    • http://files.petethepermie.com.au/uploads/1/3/2/6/132696030/2ec056070849.pdf
    • http://bizupotor.deltasculling.org/uploads/1/3/2/6/132682879/458569.pdf
    • http://vapigupi.saintgregorysileby.org/uploads/1/3/1/3/131380934/kotebogisarisaf-folijoma-rojugizaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/monster_legends_breeding_guide_with_charts.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/92646149088.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/starbucks_barista_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/3920/7069/files/alexander_2004_movie_300mb.pdf
    • https://cdn.shopify.com/s/files/1/0435/6446/6335/files/bacterial_conjunctivitis_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/46502728317.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/tikutowunekebuvisika.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/android_auto_honda.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/jupogomowexasegazegilew.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/tomcat_application_server_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/sitefujilaxosim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/gazuwonisowegojuf.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_off000054c1.bin
ddd9b6054bf9a4b02e23010666f7cc3a06fa8146bbd8ebfa43dd4732e12885a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C1 5916 bytes
font_01_sfnt_off000068ed.bin
7ab1e81f6b1885a3734a5df79e96a51292d0024f2249fc47dff308f6d7f438ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68ED 9524 bytes

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