Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3cb5f92621c785…

MALICIOUS

PDF

51.0 KB Created: 2020-08-06 08:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a973abe08f31253b393749aca77c165 SHA-1: 40468a451dd5699ab60dab27213261d4d1d9d287 SHA-256: 5d3cb5f92621c785a7a1cc13883ed76e42a618df0ab3ad04499ed8022095ef19
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=metric+bolt+size+chart+pdf+uk, which is likely used to obscure the final destination of the attack. The document's structure and content suggest it is designed to lure users into clicking these links, potentially leading to malware downloads 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.cc/pify?keyword=metric+bolt+size+chart+pdf+uk
    • http://files.caaeonline.org/uploads/1/3/0/7/130738993/zenamiraneki_kotopetafivobek.pdf
    • http://sedixonu.tarajartist.com/uploads/1/3/1/6/131607131/valiwajugilezulib.pdf
    • http://faseg.newlifecitychurch.org/uploads/1/3/2/7/132710780/16d2d9e1e9b.pdf
    • http://pezusasug.consetra.net/uploads/1/3/1/8/131856185/zilafupagewisifeje.pdf
    • http://files.toadkingcastings.co.uk/uploads/1/3/1/3/131384414/bapibukunaxizow_jaritujeneloza_ribago_regalakadi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/wurez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/11023739257.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/tolejofal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/charles_dickens_a_tale_of_two_cities_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4304/files/astm_b117_07a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/va_form_28_1900.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/tutaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/breviario_mediterraneo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/widudixifag.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b3.bin
3a59f2cd1d22f5d014ef628c5b0c3ee016ae96afdd94bacf92da469aa934feff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B3 5504 bytes
font_01_sfnt_off00008472.bin
da90eaf12237a134aedcad5023040bce3441746ca3fce343ef368196f9dc67e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8472 10520 bytes
font_02_sfnt_off0000a8aa.bin
77905ff9885e60cfff17cf33ad9da418757c231635603c6b4cc239c84c233917		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AA 16064 bytes

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