Malicious PDF — malware analysis report

Static analysis result for SHA-256 17bd82dafad15fe0…

MALICIOUS

PDF

105.7 KB Created: 2020-07-30 07:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 647dd0060ae88a81e6c33c50dab3d2d8 SHA-1: e7eb2b76f19f11a13f43a048388102ed1868fb52 SHA-256: 17bd82dafad15fe0828630a65f3132a692bab7f093a3292aa5922e1533ae50c7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically a URL related to 'soda pdf business crack'. Additionally, it exhibits characteristics of an advance-fee scam, presenting language related to lotteries, prizes, and parcel delivery requirements. The document body, though heavily obfuscated, contains references to 'soda pdf business crack' and application metadata, suggesting a lure for pirated software. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm used to distribute the 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=soda+pdf+business+crack
    • http://files.all4pawsdogrescue.com.au/uploads/1/3/1/4/131455883/9425829.pdf
    • http://files.generalinventions.net/uploads/1/3/1/3/131380848/robufaxafumapolulexa.pdf
    • http://files.pennybrumbaugh.info/uploads/1/3/0/9/130970009/4fd0b227283.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/26979279915.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/vijimapisobaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6146/1670/files/jejesojudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/semares.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/wugunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/kepesiweximobudiwidide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/sofojewedaneriv.pdf
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/55159213193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/57622935270.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/51560870002.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/pazoluzikuxemux.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_off0001602a.bin
9a82e3b0e8cf2b2d4d7d021d352c01f84b28691cea579d4838d8d7a42f179abf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1602A 5224 bytes
font_01_sfnt_off000171f0.bin
2e81418d39f659eb3c804b0847bbc487186b7fa9f7291ed6a0a38c3e293f3d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x171F0 11656 bytes

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