Malicious PDF — malware analysis report

Static analysis result for SHA-256 910e7ce694408af2…

MALICIOUS

PDF

44.0 KB Created: 2020-07-09 15:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-10
MD5: b653f702e55cce802a1b4bf7e0cbb455 SHA-1: ab72eff5d51ac1d39dd3e3ee4bf1fcb0172e8e22 SHA-256: 910e7ce694408af247ce376fec7a32162957a90754446f577f551a695101173f
184 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this is a malicious redirector and a PDF link farm, suggesting the document's primary purpose is to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=lista%20de%20collocations%20em%20ingles%20pdf In PDF document text
    • http://files.godswaytshirts.com/uploads/1/3/2/3/132302815/7c24d7928c8eda5.pdfIn PDF document text
    • http://files.naturegreenleafllc.com/uploads/1/3/2/6/132695569/senimunusaju.pdfIn PDF document text
    • http://files.theatreodyssey.com/uploads/1/3/0/7/130775396/a1784f.pdfIn PDF document text
    • http://files.ntabiledesigns.com/uploads/1/3/1/3/131379434/d0303904801.pdfIn PDF document text
    • http://files.anakarylle.com/uploads/1/3/0/8/130874073/ketakizibagesipepoz.pdfIn PDF document text
    • http://files.boysandgirlsclubsglbr.com/uploads/1/3/1/3/131397930/4038379.pdfIn PDF document text
    • http://files.familycounselingandcoaching.com/uploads/1/3/2/3/132302966/2566390.pdfIn PDF document text
    • http://files.meetzgrooming.com/uploads/1/3/1/4/131438024/47095.pdfIn PDF document text
    • http://files.holisticvoicecoach.com/uploads/1/3/0/8/130813381/43076a8d0c0.pdfIn PDF document text
    • http://files.lakelandchoralsociety.org/uploads/1/3/1/4/131406785/4785748.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://najetuj.files.wordpress.com/2020/06/74989339935.pdfIn PDF document text
    • https://lowudozid.files.wordpress.com/2020/06/73606723191.pdfIn PDF document text
    • https://sisukone.files.wordpress.com/2020/06/zopefimezuwa.pdfIn PDF document text
    • https://gijukawera.files.wordpress.com/2020/06/lusojigapazukawasepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.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

Related samples 8

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_off00006f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F53 5108 bytes
SHA-256: 2a44376cdf649c540d3856ec3aede8518fee0acecedc25e3b3f6def7524742c9
font_01_sfnt_off00008096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8096 10032 bytes
SHA-256: 7a5ac66aeee025351ae19f0ff33844ede188c5c7657043fca5be5fcf3abf1d0d

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