Malicious PDF — malware analysis report

Static analysis result for SHA-256 887704362abc7215…

MALICIOUS

PDF

43.8 KB Created: 2020-08-07 22:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53e48a52ee3f8526136506b2cf0d6e63 SHA-1: 7d31fc1c0652ddc5a77eec480fcfa6fadd686826 SHA-256: 887704362abc7215ca8e081aeb84305b1c7ddadf70f4d65dab703780238db2d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to appear as legitimate document downloads, but they redirect to a malicious SEO link farm. The primary redirector URL is https://ttraff.ru/pify?keyword=b12+deficiency+diet+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to trick users into clicking through to a potentially harmful site.

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.ru/pify?keyword=b12+deficiency+diet+pdf In PDF document text
    • http://jiposip.jerestormer.com/uploads/1/3/1/4/131453494/fipagilunid.pdfIn PDF document text
    • http://files.unfilteredperspectives.com/uploads/1/3/1/4/131437982/tojolavugonagu-kuleruj-xezizoki.pdfIn PDF document text
    • http://files.the-syndicate-group.com/uploads/1/3/1/8/131871698/kizubizijeka.pdfIn PDF document text
    • http://files.oldstatenisland.org/uploads/1/3/1/4/131482864/3221848.pdfIn PDF document text
    • http://metovub.dprgp.org/uploads/1/3/2/7/132740405/f8d18907eb0.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/1/0429/6933/3916/files/constitution_101st_amendment_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/cezar_roberto_bitencourt_tratado_de_direito_penal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/2020_weekly_calendar_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/natijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3143/files/aia_g702_g703_fillable_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/xovovuxupelojiwazesidozag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/45160711424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/wepojevaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2670/9665/files/ib_english_a_language_and_literature_course_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/takuz.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
🗂 Part of campaign: jerestormer.com 4 samples

Related samples 8

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_off00006ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC6 4968 bytes
SHA-256: 5face40261870016c515a1f64f7c41558fe792a4c2c8bedcc6b325747f85b9aa
font_01_sfnt_off00007fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE8 10080 bytes
SHA-256: ee8c716826bb7a05f730dde04058c6ab6043d83d433fa41f406404664413269d

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