Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b31924821d9a511…

MALICIOUS

PDF

73.7 KB Created: 2020-08-04 10:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c49acf2ae76bf7ec537f94a362eaa8f SHA-1: 711616314e16a50a5e427a73a8b51c3eacce6842 SHA-256: 0b31924821d9a511a688754a8e64099f63eb553be121dfc63d48522d1daf29ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. This suggests the document is designed to lure users into clicking links that lead to potentially harmful content, likely a phishing or malware distribution site. The ML classifier also strongly indicated 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=forensic+anthropology+pdf In PDF document text
    • http://files.supportarlingtoncenter.org/uploads/1/3/0/8/130814900/kefut-tixetedudowi-kakapozobix-gonab.pdfIn PDF document text
    • http://files.a1middletowntentsevents.com/uploads/1/3/0/8/130874347/pakari-momojopot.pdfIn PDF document text
    • http://files.faceoftulsa.com/uploads/1/3/0/7/130739204/madala-rovixi-fubunimalak-gusub.pdfIn PDF document text
    • http://files.federicabruni.com/uploads/1/3/1/3/131381919/195876.pdfIn PDF document text
    • http://files.maisonmelki.com/uploads/1/3/1/3/131383791/logoledo_besewej_gufatun.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/1/0433/5288/3352/files/33788580547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6415/files/wifesenuzimewupofiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/toxafupelefid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/70760581369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45865267400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/zoten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/27358287703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/jowakoviwilejajifup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/77671031446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/baganijixoniledosasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/calendario_de_vacinas_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2900/2390/files/38994921181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9401/files/71424722175.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: federicabruni.com 4 samples

Related samples 4

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_off0000e3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E4 5472 bytes
SHA-256: 87bb80c399a47f52b7f6785136f1bd620789f95955c2e89f8c51c6a4e2651d1c
font_01_sfnt_off0000f68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68A 10220 bytes
SHA-256: 1110c53f5d4d63cb2ce92ff4a562b9758421d7d1357daf6a7bf0e604c3be2cd6

Open this report in the interactive analyzer, or submit your own file for analysis.