Malicious PDF — malware analysis report

Static analysis result for SHA-256 62de9673353d5a08…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 13:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83b377b4d50bbf95e54810a27bbc4f02 SHA-1: 16bddbd52e1bff06cbca72fa814b069fd17d243e SHA-256: 62de9673353d5a08f0ae4553f309f1d0679fc80f0b9b5a066cab073174621644
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'mining waste disposal methods pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful content.

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.ru/pify?keyword=mining+waste+disposal+methods+pdf
    • http://timaliji.scrapthetrappgh.org/uploads/1/3/0/7/130739835/fimosiserozu-venimozije.pdf
    • http://dewase.artisanmadegemstones.com/uploads/1/3/1/6/131637395/2818553.pdf
    • http://lefileta.delrayalternatorandstarter.com/uploads/1/3/0/9/130969368/darosabijubogijixade.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/50606398269.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/74622296261.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/anlage_g_2020_formular_ausfllbar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/77498261703.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/asian_paints_apex_ultima_shade_card_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/suxixalovezom.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/lofusubazifaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/guxamodemezopiwuvefebosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/74031434008.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/gijapukibevasewojodevo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/2nd_edition_d_d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/vujex.pdf
    • https://cdn.shopify.com/s/files/1/0433/5878/1590/files/nizemediziwagibifokima.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_off00007c66.bin
5be863d9217966530ec64b34471c82d70f03f6dd88f7e581f16e81f86d8aba6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C66 5456 bytes
font_01_sfnt_off00008eed.bin
0f34b7515889dc556a9b9198bc44dc71b7b5d23be3fe3c352e141abc34af7302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EED 10288 bytes

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