Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb26202b9e4ba4c…

MALICIOUS

PDF

47.8 KB Created: 2020-08-11 16:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2081ab3e6383caf879c5e31542dcc03c SHA-1: f2ede908f501582d31660652d0d7fda46422fd1f SHA-256: 7bb26202b9e4ba4c27a4a3579eac3f869deb69bf327d3d9f7a7ab3fc7d35c019
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to external content. No scripts were extracted from this sample.

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=effects+of+unemployment+in+egypt+pdf
    • http://files.dairyflatponyclub.org/uploads/1/3/0/7/130739142/vidibobipal.pdf
    • http://files.northbayreclaiming.com/uploads/1/3/2/8/132815791/d529ead2a7.pdf
    • http://ginaxiwuk.mattiecowherd.com/uploads/1/3/0/8/130874620/xafogiwulumeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/the_everyday_writer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/jobiwelisoxofosezuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8910/7869/files/xizepojakodurad.pdf
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/96424110912.pdf
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/32677088986.pdf
    • https://cdn.shopify.com/s/files/1/0434/5364/4966/files/functional_behavior_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/69653439611.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/fuzanizivagazuvufudiwofi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/bepuki.pdf
    • https://cdn.shopify.com/s/files/1/0437/6503/9261/files/administracion_de_la_calidad_total_roberto_carro_paz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/advantages_of_inorganic_fertilizer.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/74136651028.pdf
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/nosedoxizuraxelupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7024/2460/files/45130033876.pdf
    • https://cdn.shopify.com/s/files/1/0454/5308/2782/files/wonok.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_off00006f49.bin
1806bbb87b1517669c6bfab31894f07b60f215cf1bdc168ea20cd5e5dda80bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 5112 bytes
font_01_sfnt_off000080ac.bin
c2084fd51379f24bbcc56034adc6bc301cef918980b4bcc6ee02372deec6a3a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80AC 10252 bytes
font_02_sfnt_off0000a3bb.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3BB 4324 bytes

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