Malicious PDF — malware analysis report

Static analysis result for SHA-256 786e5ad0eeec1dc5…

MALICIOUS

PDF

70.0 KB Created: 2020-07-29 23:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64d01b10b7c5bac316eae878ceb898cb SHA-1: 902e31912eee15fd3b8adcb46d3f87be97c3e51d SHA-256: 786e5ad0eeec1dc580a82d4e01a53c600b377d700dd5afa59e26e71b806e9adc
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector service (ttraff.ru), which is flagged as malicious. The document body and heuristics suggest a "link farm" or "free download" lure, aiming to direct users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=top+down+and+bottom+up+approach+in+nanotechnology+pdf In PDF document text
    • http://files.cartyfamily.org/uploads/1/3/0/9/130968943/vowawagopoz.pdfIn PDF document text
    • http://files.samerhatam.com/uploads/1/3/0/7/130739069/winetoke_kepuxavilere_movemuwavunegik.pdfIn PDF document text
    • http://files.akk-dc.com/uploads/1/3/1/0/131069781/2219421.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/46447443021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3508/files/88371776687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/benapufosugaravoderodur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/zejomugaruxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/pitusuxesabuxus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5483/3557/files/dorinimojejekemakasun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/73146613245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3D 5556 bytes
SHA-256: 113858e0a66967a1257d3b93b1ca28047ebc33fc8f17afcd34b894058f971667
font_01_sfnt_off00008cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFE 5620 bytes
SHA-256: 98d74bb9f5de1318d3553c114a01edd3ef593a861dd6ca7efdaae24927386860
font_02_sfnt_off0000a199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA199 17800 bytes
SHA-256: 75abf8da50affe5aa315661f3ad13c753d1257931a71be3471d5a51f711786ce
font_03_sfnt_off0000cca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA6 10268 bytes
SHA-256: 2f349be1aa001011837e06abaede8c834b933194a61d3e2732d6e265cbaaece5
font_04_sfnt_off0000efed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFED 16412 bytes
SHA-256: 4dc67e8926991813ac4eafd8729735af9e4abdf7ceac030b101ab983ecc95da3