Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e2acb2583e5518…

MALICIOUS

PDF

42.8 KB Created: 2020-08-14 20:37:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e6d310d5caff093d103fa609f809d91 SHA-1: fdf3eb31379fc7f5cd59640f7b97e6e25affe8a0 SHA-256: 00e2acb2583e5518885a68bed6b1631473210152be0d927b596cbd73e802195e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body text and heuristic firings indicate a lure related to 'proforma invoice template in word', suggesting a phishing attempt. The presence of a large number of external PDF links further supports a malicious intent, likely to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=proforma+invoice+template+in+word
    • http://files.heidisaario.com/uploads/1/3/0/8/130814208/biromefusavajitukak.pdf
    • http://wetif.lucyvcantu.com/uploads/1/3/0/7/130776855/wapixunozelomarese.pdf
    • http://vinanixav.rachelwolkenstein.net/uploads/1/3/1/4/131438096/rutikakefeledo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/24196918348.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/scales_and_arpeggios_aristocats.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wozofedotomutigetipire.pdf
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/askep_faringitis.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/zorulokavoduvuwopufumiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/87882409746.pdf
    • https://cdn.shopify.com/s/files/1/0430/9689/9745/files/nepatedanuzewi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/kizatizufawagojorexugakos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9829/9813/files/fact_sheet_about_african_swine_fever.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_off000069ab.bin
7da1c5818921a69e95f7a9f9ab9d53f61c1e5aa185ec2a83c5b618b730d66383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69AB 5276 bytes
font_01_sfnt_off00007b8f.bin
db3c8b4f1e53dc1803478c7c05d1cd03ccc82a96c55814747cf49e33b0d3c4f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8F 10260 bytes

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