Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b9d40a31848dc6…

MALICIOUS

PDF

47.5 KB Created: 2020-08-19 04:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2397defb3227d7b2a0013a326a3b9bf SHA-1: d4c6aa83a707ba2c6fbdfff4255c7edba96838a4 SHA-256: e8b9d40a31848dc64430cd9f2c4f00c94f6844dfc9cb8c6026aba2927e3a4885
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Christmas party flyer template' and includes the malicious redirector URL, suggesting a phishing or scam lure. The ML classifier strongly indicates maliciousness.

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=christmas+party+flyer+template+free+word In PDF document text
    • http://files.reusable-shopping-bags.com/uploads/1/3/1/4/131452942/a370228c0b251.pdfIn PDF document text
    • http://nugixalos.coastalphotoclub.com/uploads/1/3/1/3/131383478/125916.pdfIn PDF document text
    • http://files.superstarbooks.com/uploads/1/3/1/4/131452840/vazisosiwe-kuxabu-sejinaxowe-wabeputikulonik.pdfIn PDF document text
    • http://pejodasu.freeurnsforveterans.org/uploads/1/3/1/8/131856827/vazetokov-wazeba-mivuw-girigunijuva.pdfIn PDF document text
    • http://files.ronthomaswriter.com/uploads/1/3/1/6/131606331/d5c55031070223c.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/1/0435/2029/5064/files/medidas_dela_cancha_de_basquetbol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6794/0765/files/93878776594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/pifabajefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/a_dozen_a_day_book_3_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6133/files/bofiminugegusizasoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/puloguvikuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0663/9779/files/early_transcendentals_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/ninolufowiseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/xekapebodeseviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/paslode_framing_nailer_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/zomavoweluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1217/3463/files/bag_sewing_patterns_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/pinoxugenevuwidadaba.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 5380 bytes
SHA-256: 9945abd28ebcaa119fc345ce6925de41688a2faaefa22ba648bb647eafcbbda7
font_01_sfnt_off00007149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7149 13324 bytes
SHA-256: 08b865a6f8b4b1cbc55ecee6e3a3ca58d1c1e0398e1938df9f19639461cac13e
font_02_sfnt_off00009b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B55 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210