Malicious PDF — malware analysis report

Static analysis result for SHA-256 88edc9fabb5493b7…

MALICIOUS

PDF

45.6 KB Created: 2020-08-05 14:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ccbdd772a34ae07cc150cb2d3cc47c8 SHA-1: be75f21412ffc09ae5d826ba2b8602ef5466d50a SHA-256: 88edc9fabb5493b75a6d86b386f979fc6121c9c0ef42fe85a1284fc6afe671d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body and heuristics indicate a 'free-download phishing' lure, attempting to trick users into clicking through to potentially harmful content. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=bandung+tempo+dulu+pdf In PDF document text
    • http://files.physioplusguisborough.co.uk/uploads/1/3/1/0/131070379/fukuwisepowe.pdfIn PDF document text
    • http://megomakil.abs-lao.com/uploads/1/3/1/4/131453541/desopotaj.pdfIn PDF document text
    • http://files.write-the-vision.com/uploads/1/3/0/7/130775174/47a537.pdfIn PDF document text
    • http://files.justanhrgirl.com/uploads/1/3/1/3/131380213/tixobeboz-pirugamom-notopenoru-zugutolivex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0840/files/ssc._nic._in_mts_result_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2387/5746/files/larakupadufupesaliruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/muxubiromivojemote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/wuvogamababobomeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/25710125910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/48654861569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/health_benefits_of_chia_seeds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/5421996066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/gomapiwarejonopat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/utau_download_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/zokar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/makisikarediwusanivexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/lurufekozaguwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/gudodifemogefiredesevuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1555/files/vexefov.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000760d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760D 5136 bytes
SHA-256: c7a0923a1406553b14a3c87b7a882c3e97709bcc5ee88288fa91bc6549a8eb65
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 9900 bytes
SHA-256: 594167ba8b8448ee1c83a22fec9567d8499e45cc5e821ec811efaa705455f771