Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f88f57fa57a1661…

MALICIOUS

PDF

54.1 KB Created: 2020-08-20 23:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8de88ee66d7d2b75d9bcd3f9642708e5 SHA-1: bd53bb5419d7a945561521059ab47c5890c841a1 SHA-256: 0f88f57fa57a16615c9c1d0d64718c88ddb33fd1226a17dc5217aac0e29b4495
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=apertura+inglesa+pdf+gratis', suggesting a lure for free downloads that redirects to malicious infrastructure. This indicates a phishing attempt to redirect users to potentially harmful content.

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.com/pify?keyword=apertura+inglesa+pdf+gratis In PDF document text
    • http://xogal.loveloveandlove.org/uploads/1/3/0/7/130740049/fepew.pdfIn PDF document text
    • http://feteximux.mugahedomar.com/uploads/1/3/0/7/130776433/vupiru_nezedav.pdfIn PDF document text
    • http://bikezag.sunshinecoastcelebrant.net/uploads/1/3/2/6/132680981/e88b8f7fc10e.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/1/0430/0252/7895/files/bosch_cctv_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/auditing_and_investigation_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/23080330489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/xofiregirojofoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/vorasowixugisawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/absenteeism_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/gudasobokupuxefadune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/81403919232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4162/files/diltiazem_hydrochloride_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/action_words_worksheet_for_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/madigagizanudejomibam.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 5200 bytes
SHA-256: 765fa79b034feee8af11ac35df1948ef02af6348baf1df42d6b3e0c807d5866c
font_01_sfnt_off00008e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6E 11180 bytes
SHA-256: 8f1f76f89969257276ecfdbf21e36f221a7b03a6618129c007fcc0dd050c1f69
font_02_sfnt_off0000b328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB328 16932 bytes
SHA-256: ea3855bd39a6769c6c780e1d01c2a6e29306a64a2e4f2b6001bca48575995a4c

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