Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0cdab027e98214…

MALICIOUS

PDF

42.2 KB Created: 2020-07-15 14:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa75282b84895e6e31823996647957e9 SHA-1: d94ff394dcdb72c39218a69a39aae8bc7bba82f2 SHA-256: 0d0cdab027e982142c8f569654bfeb10ac8299e1542837c2ec542ae94172fae8
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 redirector infrastructure or potentially malicious content farms. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to 'ttraff.com', indicating a likely attempt to redirect users to malicious sites. 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.com/wb?keyword=honda%20accord%202012%20coupe%20manual
    • http://files.saikmusic.org/uploads/1/3/2/7/132740415/67c8893d65fe7.pdf
    • http://files.williammonaguenativeart.com/uploads/1/3/0/7/130739747/vunidegote.pdf
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdf
    • http://files.ryandurbinceramics.com/uploads/1/3/0/7/130776674/7540452.pdf
    • http://files.nineteen09gifts.com/uploads/1/3/2/6/132681378/6862625.pdf
    • http://files.evablechova.com/uploads/1/3/1/4/131409158/kakuwerimel.pdf
    • http://files.onstagetheatricalproductions.com/uploads/1/3/2/7/132740870/9747311.pdf
    • http://files.parks-law-offices.com/uploads/1/3/1/4/131406108/betugiw_tituxavomurobik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://bidazinefak.files.wordpress.com/2020/06/letazuwelo.pdf
    • https://sabunupotumo.files.wordpress.com/2020/07/13056738808.pdf
    • https://rusazisubebo.files.wordpress.com/2020/07/xilanididexifuzidig.pdf
    • https://bijezopu.files.wordpress.com/2020/06/zezuvebopezan.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/wibotoloko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/41731715257.pdf
    • https://cdn.shopify.com/s/files/1/0432/6844/0232/files/19236840704.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/wakukaronezufavun.pdf
    • https://cdn.shopify.com/s/files/1/0430/2523/6121/files/xeselirowajisuzesuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/37120126781.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/somufedigok.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/70556149855.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/48411044690.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_off000067b7.bin
45f4685dbd4c5292a73f427b0c007cf109245d59b9f6bfddca690d75f0545282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 5080 bytes
font_01_sfnt_off000078d6.bin
1997f3104460a8fc547b1bb6ef466ec85cf2f1c1cbfa4e9e70a0fe3632abdba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D6 10104 bytes

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