Malicious PDF — malware analysis report

Static analysis result for SHA-256 067196b5a66ed59b…

MALICIOUS

PDF

34.9 KB Created: 2020-08-24 17:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9240203f8135dca5a2b3170632f2a20 SHA-1: f43b330f897ff98466822f240f8ea777925eb91c SHA-256: 067196b5a66ed59b5a74c5a994e86ccce4c3ce93fba9913325040866b1453595
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments suggesting it's a datasheet, likely a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, potentially for SEO manipulation or distributing further malicious content. No scripts were extracted, but the heuristic firings strongly suggest malicious redirection.

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=ixia+cloudstorm+datasheet
    • http://minigo.itsbendybo.com/uploads/1/3/1/4/131408567/1ee2affdd3ad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/jerib.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/balancing_chemical_equations_worksheet_9th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/sutubavagikuvales.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/71148838204.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/78457588684.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/atmospheric_science_an_introductory_survey_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/instrucciones_de_amenemope.pdf
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/hemoglobin_concentration_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/pipoluluxesalakojinizu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/six_caps_font.pdf
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/22698145440.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/42036811171.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/54717752436.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_off000049d3.bin
adc451853ba1a47a623c740ba341a456766ea9e8ee95ae4470fe177bbe155808
pdf-font-stream PDF embedded font (sfnt) at offset 0x49D3 5184 bytes
font_01_sfnt_off00005b41.bin
98dfd5b8ee484562fd6ff3b331ed7c8caa13aa87b979a8bc9d0689b904a8f3df
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B41 10024 bytes