Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc88ad89a6a2e33…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 23:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e505c8abe4dbb198c85ad1f7b5dc92b SHA-1: e6469f6fabf6493b4bcb76a22d207eae160e3b09 SHA-256: adc88ad89a6a2e3351e8a3071f7349972ca3006a31702459f8175900383d5ce0
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=angry+birds+offline+for+pc'. This URL is presented within the document body, disguised as a download link for 'Angry birds offline for pc'. The document also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or distributing malicious files. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=angry+birds+offline+for+pc In PDF document text
    • http://files.morganvalleycandles.com/uploads/1/3/1/1/131163846/6676581.pdfIn PDF document text
    • http://files.ursulaadams.com/uploads/1/3/1/4/131406751/454e27.pdfIn PDF document text
    • http://giwele.andoanderson.com/uploads/1/3/1/3/131398140/60dbdef56ded9.pdfIn PDF document text
    • http://rerasomo.jpascalcreations.com/uploads/1/3/1/6/131637814/povuluses.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/1/0430/6914/5241/files/9614418371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/netopufukugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/85221726319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/litafigadunudujofaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59526866216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pawatofamilafal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2809/3856/files/jitedamugimevexozigapep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/modele_attestation_employeur_assistant_maternelle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/cuales_son_las_cavidades_del_cuerpo_humano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/introduction_to_ant_colony_optimization.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5371 5344 bytes
SHA-256: e3ee126d4de7eca0f11c02042276e8e6a14030ae50c569dbd1cb6efaa2868b6d
font_01_sfnt_off000065ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 11252 bytes
SHA-256: 840b468398a0b3de47b5c1179edecb284fb1422cd82143809d2c796b650c2cc1

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