Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2160cd41df38cd3…

MALICIOUS

PDF

288.4 KB Created: 2020-07-10 07:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: be3100f8842a4cf7ad1fff7b63edeca9 SHA-1: c48f4d3b63a7adedc0cb107518508284de1927a7 SHA-256: f2160cd41df38cd3926197e91ff934cffd58b40492c569c03982e874db32bdfc
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains heuristics indicating it is a malicious redirector and uses advance-fee scam lures, specifically mentioning parcel delivery. The embedded URL, https://ttraff.com/wb?keyword=rtw%201064%20plus%20manual, is flagged as malicious and likely leads to further stages of the attack. No scripts were extracted from this sample, but the combination of the malicious URL and the scam lure strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wb?keyword=rtw%201064%20plus%20manual In PDF document text
    • http://files.examea.com/uploads/1/3/1/4/131454503/nidajapuw.pdfIn PDF document text
    • http://files.defineandfree.com/uploads/1/3/0/7/130740256/lalopipufaj-zikov.pdfIn PDF document text
    • http://files.theladiescommunity.com/uploads/1/3/1/3/131398449/tejam.pdfIn PDF document text
    • http://files.zsuzsaszuts.com/uploads/1/3/1/6/131606819/lukixu-mekatadegegejir.pdfIn PDF document text
    • http://files.prettylittlerose.uk/uploads/1/3/1/3/131398386/waputil.pdfIn PDF document text
    • http://files.thenauticalartsworkshop.com/uploads/1/3/1/6/131606035/bikebawifutir.pdfIn PDF document text
    • http://files.parentsoftransgenderkids.org/uploads/1/3/1/3/131382907/d444faa4.pdfIn PDF document text
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdfIn PDF document text
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdfIn PDF document text
    • http://files.kemministries.com/uploads/1/3/2/8/132816066/2299268.pdfIn PDF document text
    • http://files.boyrazak.com/uploads/1/3/0/7/130739836/deletijarum_zujujob_dikiragidizuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://getaxigafinu.files.wordpress.com/2020/07/jevatunowekajivunitowaker.pdfIn PDF document text
    • https://dexubifomuti.files.wordpress.com/2020/06/foxamekonini.pdfIn PDF document text
    • https://molavoj.files.wordpress.com/2020/06/pebebanivelixademolawas.pdfIn PDF document text
    • https://ragupawagev.files.wordpress.com/2020/07/bosuvovasazuja.pdfIn PDF document text
    • https://toxuluva830071386.files.wordpress.com/2020/06/45636537373.pdfIn PDF document text
    • https://senuxubu.files.wordpress.com/2020/07/libidam.pdfIn PDF document text
    • https://fakuvinim168679484.files.wordpress.com/2020/07/jemederi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jexisobipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kurejala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43778 5012 bytes
SHA-256: d4e771674407190fa12aefaf628b27f28e46500f9f03623c6043dd62e1160926
font_01_sfnt_off0004487d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4487D 12900 bytes
SHA-256: f0795fd3d312c663bdce68dedc82a16e0eec5326e532e06ad87c462978599461