Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac58517caf6aeffa…

MALICIOUS

PDF

42.1 KB Created: 2020-08-18 18:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 087b517b8034ec277aacdbca41ae3907 SHA-1: 242747df7a433157b37cd78931b624969aed153b SHA-256: ac58517caf6aeffa23e134f37115dd39d8eac30332c0bb4fa8e8ebb5cce22f36
152 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a phishing or redirection campaign. The document body, though heavily obfuscated, contains the text 'Report on money laundering in bc casinos' and the malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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=report+on+money+laundering+in+bc+casinos
    • http://filusutub.adobegbulldogs.com/uploads/1/3/1/3/131380739/3aaeca4e4cd2f0d.pdf
    • http://diwin.ambraguarnieri.com/uploads/1/3/2/6/132695384/8727479.pdf
    • http://files.petwelfarealliance.org/uploads/1/3/0/9/130969003/rexeravob.pdf
    • http://files.maggieduffinporcelainandglass.com/uploads/1/3/1/8/131871740/xupekexolejibikiwo.pdf
    • http://files.shepherdscott.com/uploads/1/3/1/4/131455543/pezeta-jesuxaduxamimun-bonulolowowiwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/borekafoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/lowes_manual_lawn_aerator.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2778/files/gobulotiguwiruzajezofit.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/xaxofivubowitugegifozuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/rozumupunibexafoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/49436866180.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/dorasosigonutozewuxak.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/tegodezitunutatiziw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/99552337963.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/emulator_android_di_linux_mint.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/vopoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/pdf_to_word_converter_apk_pure.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d9.bin
85668c69f825574982eb72da9d450393119e97c63a3045e0fd5c86cafe58b063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 5640 bytes
font_01_sfnt_off000077f2.bin
152bd5a01b372a6ce0ddba82324f1992717ae3e73a00e6c533af19792ecd5817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F2 10412 bytes

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