Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c374c78016b40cc…

MALICIOUS

PDF

40.6 KB Created: 2020-08-12 18:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dfb072d7140976ae98ab3f46d7b587b SHA-1: 6024310c2ecbfee18014f73990ab7142173aa988 SHA-256: 9c374c78016b40cc1c45e659d19b53775b0d0f38cd3ffbe2b1343fd75959cbeb
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The primary malicious URL identified is https://ttraff.com/wb?keyword=python%20requests%20module%20manual%20install, which likely leads to further malicious content or phishing pages.

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/wb?keyword=python%20requests%20module%20manual%20install
    • http://files.frohockministrycostarica.com/uploads/1/3/1/6/131637308/314971.pdf
    • http://zegiroke.summerconferenceportland.org/uploads/1/3/1/8/131856626/fiviguwaresowe-tawixorid-vowedubuni-gisesafulutimib.pdf
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
    • http://files.rram.ca/uploads/1/3/1/3/131379034/dilafonubejomexik.pdf
    • https://cdn.shopify.com/s/files/1/0438/0344/3361/files/80033159124.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/zewafewosir.pdf
    • https://cdn.shopify.com/s/files/1/0448/3471/7858/files/physical_appearance_adjectives_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/16870794334.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/cedaw_tagalog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/tegonefogasojij.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/42774871303.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/wifesud.pdf
    • https://cdn.shopify.com/s/files/1/0432/7283/1134/files/accounting_and_finance_for_non_specialists_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/55876177332.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/33205028666.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/xerekopajopifixebap.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/mawukumumuparapevusa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/auditing_interview_questions_and_answers.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_off0000610e.bin
b94f1adb562b2b57c2db559fddf5e51f89e29fb5699dc13cf0f897c48b2e42df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610E 5292 bytes
font_01_sfnt_off000072d8.bin
9a7006e8528ea845dec4982b5980fabe053eb6b182fd468d3b6c75292609e3fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D8 10092 bytes

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