Malicious PDF — malware analysis report

Static analysis result for SHA-256 074c619f3eb8a30f…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 04:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c58d4bbf45983e655545c78ccf573ab4 SHA-1: 8eefcbef1fb4bd915f3f547323edbcc0d0707b3b SHA-256: 074c619f3eb8a30face190574c7d27c4ee4e70825a906f251ce6712aef62308e
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a "Swiggy app for Jio phone" and the malicious URL itself. This suggests a phishing or scam attempt to redirect users to potentially harmful content. No scripts were extracted, but the PDF structure and malicious link are strong indicators.

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=swiggy+app++for+jio+phone
    • http://files.installatiebedrijf-altena.com/uploads/1/3/0/8/130814460/jilamonemevugi_fatexopaxawafes.pdf
    • http://files.downercommunityassociation.org/uploads/1/3/0/8/130874457/cbc88e59ce61.pdf
    • http://files.btmamusic.com/uploads/1/3/1/4/131453989/2e65802.pdf
    • http://files.bildwerkfrauenau.de/uploads/1/3/1/6/131637546/c130411c.pdf
    • http://files.stevendchesterphotography.com/uploads/1/3/1/4/131438299/4ad3bfe2740.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/13961952726.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/android_version_9_easter_egg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/apple_phone_ringtone_zedge.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/ranotexivudeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/embedded_system_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/19600990690.pdf
    • https://cdn.shopify.com/s/files/1/0462/6389/4173/files/xomubefilubux.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/kepoxijotoludopo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/romasivukabivudukanizusum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cc0.bin
71024171fa1802d2e96d6961a93a1d9dc13d11af9c5717a657163af7822d787e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC0 5036 bytes
font_01_sfnt_off00006de6.bin
5cd6aa091668c50e1579c9b9d6ea4e55f1031104ead1e69236aa7d7fc830ac60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE6 10276 bytes
font_02_sfnt_off000090d2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90D2 4324 bytes

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