Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fa0b1d0d660ef1…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 03:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 604c51536ab7f24b989b4f5737491baf SHA-1: 46ce7dd4ff16d6bd6bb1b624db412b963d8f495c SHA-256: 60fa0b1d0d660ef162df8d7f5e297e9668545fad5d653cacf3a4a69de2f502de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This suggests an attempt to lead the user to malicious content or a phishing page. The ML classifier also strongly indicated maliciousness.

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=ikonik+skin+method+need+an+android
    • http://files.glbthotline.org/uploads/1/3/0/7/130740625/musuwuxadu_zutov_pisikedamigubo_daxedebixaxeso.pdf
    • http://files.evelandfarm.com/uploads/1/3/1/4/131436971/93088aafe1eb3.pdf
    • http://files.naturecoastorchidsociety.com/uploads/1/3/1/3/131379846/5439444.pdf
    • http://files.levelupperformancept.com/uploads/1/3/0/7/130775490/7454038.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/xenananibujinipozonibak.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/96703089627.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/dimirukurudokoditi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/retinoblastoma_bilateral.pdf
    • https://cdn.shopify.com/s/files/1/0436/4373/2126/files/19011850963.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/rj45_ethernet_wiring_color_guides.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/fafiwemu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/vomuxorekefewuliza.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/jaxozowunogilova.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6234/files/gebizomab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/apprendre_python_3._7.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/defibifeponasa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/55114704361.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_off000063f4.bin
0d18e68b6b8e6e28c311fc4d140c3e481a76a328e57966d64e7e3ec760e73836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 5032 bytes
font_01_sfnt_off000074de.bin
e8f3ffdf329ecee8463e2312dd35b540e1a28dba0da16aa1a28e8daf1d9f501d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DE 10860 bytes

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