Malicious PDF — malware analysis report

Static analysis result for SHA-256 8079d5b210dd86be…

MALICIOUS

PDF

48.3 KB Created: 2020-08-09 21:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b783fd484643cf382c414f3f8093a31 SHA-1: 666a1786d48df89071dbb1eec6ab2e7274aeb157 SHA-256: 8079d5b210dd86bef5ac37acb1070b3c628fd453dce65620471698d2a98f3cd4
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a malicious URL, indicating a phishing or scam attempt. The ML classifier strongly suggests maliciousness. The embedded content, though obfuscated, contains URLs that are part of a link farm designed to attract search engine traffic and lead users to malicious sites.

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.cc/pify?keyword=diccionario+de+la+biblia+reina+valera+pdf In PDF document text
    • http://files.greenearthtravel.com/uploads/1/3/1/4/131438071/wutopalowes-mofosipifikafil-munuvepepiri-pemubadula.pdfIn PDF document text
    • http://files.hightechtintplus.com/uploads/1/3/2/3/132302973/47aff28564.pdfIn PDF document text
    • http://vozimoti.evrimozgen.com/uploads/1/3/1/1/131164250/pizigonelutuxuvutu.pdfIn PDF document text
    • http://files.davidjhelfand.info/uploads/1/3/0/8/130874400/bukako-fizabiferov-zojuruvefov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/errorless_biology_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/libumikiremutonomos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/gapufirepigezipixew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/wuzewutibanomodufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/nebilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/texas_real_estate_commission_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/razovegid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/antenatal_care_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3757/9674/files/wupuxulujixib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6206/files/past_tense_vs_present_perfect_tense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/code_discord_bot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/cwa_district_6.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D6 4880 bytes
SHA-256: 8a86a4d4b0c7c891e601be9a0940adeb91ef1212cc470767863d63432157bbba
font_01_sfnt_off0000696d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696D 11500 bytes
SHA-256: 4c367b1fe3da24ac199de70c9c1bca5aed91fedfcde7e8733a1126803c50ba33
font_02_sfnt_off00008f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1F 16084 bytes
SHA-256: 3dd6252bb62cdcc21e2b76bdeb68ba6c8db9c2d08edae94764e010183c5b1848
font_03_sfnt_off0000a3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3